4. To utter vain, pompous words; to brag; to boast; -- with of. [Archaic.]

Ethoipes of their sweet complexion crack.

Shak.

Crack, n. 1. A partial separation of parts, with or without a perceptible opening; a chink or fissure; a narrow breach; a crevice; as, a crack in timber, or in a wall, or in glass.