Webster's Dictionary 
(1): ( n.) See Myna.
(2): ( n.) An ancient weight or denomination of money, of varying value. The Attic mina was valued at a hundred drachmas.
King James Dictionary 
MI'NA, n. L. mina. A weight or denomination of money. The mina of the Old Testament was valued at sixty shekels. The Greek or Attic mina, was valued at a hundred drachmas, about f2. l7s.sterling, .44 cents.
Hastings' Dictionary of the New Testament 
MINA. —See Money.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature 
(in Greek Μνᾶ , A.V. "pound"), a weight and coin which, according to the Attic standard, was equivalent to 100 Drachmae (Plutarch, Solon, 16; Pliny, 21:109) or Roman Denarii, i.e. (estimating the average value at the time of Christ) about $16. It is the sum named in the parable of Luke 19:13 sq., where the amount of 100 mince is therefore some $1600. On the other hand, the mina mentioned in 1 Maccabees 14:24 (comp. 15:18) is a weight, and (as being originally equivalent to the Heb. shekel) it may be reckoned at 8220 Paris grains (Bickh, Metrol. Untersuch. page 124); and the sum of 1000 mince of gold would then amount to about $16,910. (See Money).
Different from this is the Heb. maneh ( מָנֶה ), originally likewise a weight, but used of the precious metals, and hence ultimately determining the value of coin. The word has perhaps an etymological connection with the Greek Mina. (See Metrology).