Webster's Dictionary 
(1): ( a.) To be the double of; to exceed by twofold; to contain or be worth twice as much as.
(2): ( n.) A person or thing that is the counterpart of another; a duplicate; copy; (Obs.) transcript; - now chiefly used of persons. Hence, a wraith.
(3): ( a.) To pass around or by; to march or sail round, so as to reverse the direction of motion.
(4): ( v. i.) To play tricks; to use sleights; to play false.
(5): ( a.) To unite, as ranks or files, so as to form one from each two.
(6): ( a.) Having the petals in a flower considerably increased beyond the natural number, usually as the result of cultivation and the expense of the stamens, or stamens and pistils. The white water lily and some other plants have their blossoms naturally double.
(7): ( a.) Divided into two; acting two parts, one openly and the other secretly; equivocal; deceitful; insincere.
(8): ( a.) Being in pairs; presenting two of a kind, or two in a set together; coupled.
(9): ( a.) Twofold; multiplied by two; increased by its equivalent; made twice as large or as much, etc.
(10): ( v. i.) To return upon one's track; to turn and go back over the same ground, or in an opposite direction.
(11): ( v. i.) To be increased to twice the sum, number, quantity, length, or value; to increase or grow to twice as much.
(12): ( v. i.) To set up a word or words a second time by mistake; to make a doublet.
(13): ( adv.) Twice; doubly.
(14): ( n.) Something precisely equal or counterpart to another; a counterpart. Hence, a wraith.
(15): ( n.) Twice as much; twice the number, sum, quantity, length, value, and the like.
(16): ( n.) A turn or circuit in running to escape pursues; hence, a trick; a shift; an artifice.
(17): ( n.) An old term for a variation, as in Bach's Suites.
(18): ( n.) A player or singer who prepares to take the part of another player in his absence; a substitute.
(19): ( a.) To increase by adding an equal number, quantity, length, value, or the like; multiply by two; to double a sum of money; to double a number, or length.
(20): ( a.) To make of two thicknesses or folds by turning or bending together in the middle; to fold one part upon another part of; as, to double the leaf of a book, and the like; to clinch, as the fist; - often followed by up; as, to double up a sheet of paper or cloth.
(21): ( n.) A feast in which the antiphon is doubled, hat is, said twice, before and after the Psalms, instead of only half being said, as in simple feasts.
(22): ( n.) A game between two pairs of players; as, a first prize for doubles.
(23): ( n.) Among compositors, a doublet (see Doublet, 2.); among pressmen, a sheet that is twice pulled, and blurred.
(24): ( n.) That which is doubled over or together; a doubling; a plait; a fold.
(25): ( n.) Double beer; strong beer.
Vine's Expository Dictionary of NT Words 
denotes "twofold, double," 1—Timothy 5:17; Revelation 18:6 (twice). The comparative degree diploteron (neuter) is used adverbially in Matthew 23:15 , "twofold more."
signifies "to double, to repay or render twofold," Revelation 18:6 .
King James Dictionary 
DOUBLE, a. Dubl. L., Gr. See Two.
1. Two of a sort together one corresponding to the other being in pairs as double chickens in the same egg double leaves connected by one petiole. 2. Twice as much containing the same quantity or length repeated.
Take double money in your hand. Genesis 53 .
Let a double portion of thy spirit be on me. 2 Kings 2 .
With to as, the amount is double to what I expected.
3. Having one added to another as a double chin. 4. Twofold also, of two kinds.
Darkness and tempest make a double night.
5. Two in number as double sight or sound. See No. 1. 6. Deceitful acting two parts, one openly, the other in secret.
And with double heart do they speak. Psalms 12 .
DOUBLE, adv. Dubl. Twice.
I was double their age.
DOUBLE, in composition, denotes, two ways, or twice the number or quantity.
International Standard Bible Encyclopedia 
dub ´' l ( שׁנה , shānāh , "to repeat," as in counting; כּפל , kāphal , "to fold over," or "double," as a cloth): A word used quite frequently in the Old Testament. Jacob ordered his sons to take double money in their hands, i.e. twice the necessary amount ( Genesis 43:12 , Genesis 43:15 ). If a thief be caught with a living animal he was to restore double ( Exodus 22:4 ); if property be stolen out of the house of one to whom it is entrusted he was to restore double ( Exodus 22:7 , Exodus 22:9 ). The firstborn was to receive a double portion of the inheritance ( Deuteronomy 21:17 ). Likewise also by a beautiful symbol Elisha asked for a double portion of Elijah's spirit to fall upon him ( 2 Kings 2:9 ). Degrees of punishment or sufferings were also expressed by the idea of a doubling ( Isaiah 61:7; Jeremiah 16:18; Jeremiah 17:18; Zechariah 9:12 ). The use of the second Hebrew form in Job 11:6 and Job 41:13 seems quite confusing in its translation. the King James Version translates it simply "double," but the Revised Version (British and American) gives it its expanded and derived meaning, "manifold in understanding," and "who shall come within his jaws," respectively, "manifold" in the first instance meaning multiplied, and "jaws" doubtless meaning the double row of teeth. The classic phrases in the New Testament are those used by James to represent instability and a wavering disposition, δίψυχος , dı́psuchos , literally, "doubleminded" ( James 1:8; James 4:8 ).
Cyclopedia of Biblical, Theological and Ecclesiastical Literature 
(represented by several Hebrews and Greek words) has many significations in Scripture. "A double garment" ( Exodus 39:9) may mean a lined habit, such as the high-priest's pectoral, or a complete habit or suit of clothes, a cloak and a tunic, etc. Double heart, double tongue, double mind, are opposed to a simple, honest, sincere heart, tongue, mind, etc. Double, the counterpart to a quantity, to a space, to a measure, etc., which is proposed as the exemplar. "Double money" — the same value as before, with an equal value added to it ( Genesis 43:12; Genesis 43:15). If a stolen ox or sheep be found, the thief shall restore double, that is, two oxen or two sheep. For the right understanding of Isaiah 40:2, "She hath received of the Lord's hand double for all her sins," read the counterpart, that which fits, the commensurate quantity, extent, or number of her sins; that which is adequate, all things considered, as a dispensation of punishment. This passage does not mean twice as much as had been deserved, double what was just, but the fair, commensurate, adequate retribution. The same is the meaning of this phrase in other places ( Isaiah 61:7; Jeremiah 16:18; Jeremiah 17:18.-Calmet, s.v.