1. (v. t.) To break or burst, with or without entire separation of the parts; as, to crack glass; to crack nuts.

2. (v. t.) To rend with grief or pain; to affect deeply with sorrow; hence, to disorder; to distract; to craze.

3. (v. t.) To cause to sound suddenly and sharply; to snap; as, to crack a whip.

4. (v. t.) To utter smartly and sententiously; as, to crack a joke.

5. (v. t.) To cry up; to extol; -- followed by up.

6. (v. i.) To burst or open in chinks; to break, with or without quite separating into parts.

7. (v. i.) To be ruined or impaired; to fail.

8. (v. i.) To utter a loud or sharp, sudden sound.

9. (v. i.) To utter vain, pompous words; to brag; to boast; -- with of.

10. (n.) 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.

11. (n.) Rupture; flaw; breach, in a moral sense.

12. (n.) A sharp, sudden sound or report; the sound of anything suddenly burst or broken; as, the crack of a falling house; the crack of thunder; the crack of a whip.

13. (n.) The tone of voice when changed at puberty.

14. (n.) Mental flaw; a touch of craziness; partial insanity; as, he has a crack.

15. (n.) A crazy or crack-brained person.

16. (n.) A boast; boasting.

17. (n.) Breach of chastity.

18. (n.) A boy, generally a pert, lively boy.

19. (n.) A brief time; an instant; as, to be with one in a crack.

20. (n.) Free conversation; friendly chat.

21. (a.) of superior excellence; having qualities to be boasted of.

Daedalian Parthian shot above par abrade abrasion abysm abyss account for ace address adept adroit allegation allegorize alligator answer aperture aphorism apostrophe apothegm approach apt arroyo artistic assay assertion attempt authoritative averment back answer band bang bar bark bash bastinado bat beating belt bezel bid biff birthmark bit blackhead blast blaze bleb blemish blister bloody blow bon mot bonk boom bottom boutade bowshot box canyon brand bravura breach break break open break up breakage breath breathing brief span bright idea bright thought brilliant brilliant idea broach broaching bug bulla bump burn burn in burn off burst bust canal canalize canyon carve cast catch caustic remark cauterize cavity chafe chamfer channel chap char chase chasm check chimney chink chip chisel chop cicatrix cicatrize clack clap clarify clash claw clean clear up clearing cleave cleft cleuch clever click clip clobber close quarters close range clough clout clump coal col coldcock come apart come unstuck comeback comedo comment conceit concussion coordinated corrugate corrugation coulee couloir coup crack crack up crackerjack cracking crackle crackling cranny crash crater craze crepitate crepitation crevasse crevice crimp crump cryptanalyze cunning cupel cut cut apart cut open cute cutting remark cwm dado daedal dash deal deal a blow debug decipher deck declaration decode decrepitate decrepitation decrypt deface defacement defect defection deficiency defile deform deformation deformity deft dell demonstrate demythologize detonate detonation dexterous dextrous dictum dig dike dint diplomatic discharge disclosure discontinuity disentangle disfiguration disfigure disfigurement disintegrate dispart distort distortion ditch divaricate divide divine do donga dope dope out draw drawback drollery drub drubbing drumming dump earreach earshot effort elucidate endeavor engrave engraving enlighten epigram essay euhemerize excavation excellent exclamation exemplify exfoliate experiment expert explain explain away explicate explode explosion exposit expound