From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( a.) Characterized by sharpness, directness, or pithiness of expression; terse; epigrammatic; especially, directed to a particular person or thing.

(2): ( a.) Sharp; having a sharp point; as, a pointed rock.

(3): ( imp. & p. p.) of Point

King James Dictionary [2]

POINT'ED, pp. Sharpened formed to a point directed aimed.

1. Aimed at a particular person or transaction. 2. a. Sharp having a sharp point as a pointed rock. 3. Epigrammatical abounding in conceits or lively turns as pointed wit.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [3]

In the English Prayer-book the Psalter, Venite, Te Deum, etc., are punctuated throughout in a peculiar manner by the insertion of a colon in or near the middle of each verse without regard to grammatical rules. This is done with the design of facilitating the chanting by presenting to the eye the most natural division of the verse, or that which will most readily correspond with the movement of the chant-tune. In allusion to this, the title of the English Prayer-book states that the Psalms of David are pointed (or punctuated) as they are to be sung or said in churches." In the American editions the grammatical punctuation has been restored, and the above portion of the title omitted.