Crack v. t. [imp. & p. p. Cracked p. pr. & vb. n. Cracking.]
 1. To break or burst, with or without entire separation of the parts; as, to crack glass; to crack nuts.
 2. To rend with grief or pain; to affect deeply with sorrow; hence, to disorder; to distract; to craze.
    O, madam, my old heart is cracked.   --Shak.
    He thought none poets till their brains were cracked.   --Roscommon.
 3. To cause to sound suddenly and sharply; to snap; as, to crack a whip.
 4. To utter smartly and sententiously; as, to crack a joke.
 5. To cry up; to extol; -- followed by up. [Low]
 To crack a bottle, to open the bottle and drink its contents.
 To crack a crib, to commit burglary. [Slang]
 To crack on, to put on; as, to crack on more sail, or more steam. [Colloq.]