CRACK,

1. To rend, break, or burst into chinks to break partially to divide the parts a little from each other as, to crack a board or a rock or to break without an entire severance of the parts as, to crack glass, or ice.
2. To break in pieces as, to crack nuts.
3. To break with grief to affect deeply to pain to torture as, to crack the heart. We now use break , or rend.
4. To open and drink as, to crack a bottle of wine. Low.
5. To thrust out, or cast with smartness as, to crack a joke.
6. To snap to make a sharp sudden noise as, to crack a whip.
7. To break or destroy.
8. To impair the regular exercise of the intellectual faculties to disorder to make crazy as, to crack the brain.

CRACK,

1. To burst to open in chinks as, the earth cracks by frost or to be marred without an opening as, glass cracks by a sudden application of heat.
2. To fall to ruin, or to be impaired.

The credit of the exchequer cracks, when little comes in and much goes out. Not elegant.

3. To utter a loud or sharp sudden sound as, the clouds crack the whip cracks.
4. To boast to brag that is, to utter vain, pompous, blustering words with of.

The Ethiops of their sweet complexion crack. Not elegant.

CRACK, n. Gr.

1. A disruption a chinkor fissure a narrow breach a crevice a partial separation of the parts of a substance, with or without an opening as a crack in timber, in a wall, or in glass.
2. A burst of sound a sharp or loud sound, uttered suddenly or with vehemence the sound of any thing suddenly rent a violent report as the crack of a falling house the crack of a whip.
3. Change of voice in puberty.
4. Craziness of intellect or a crazy person.
5. A boast, or boaster. Low.
6. Breach of chastity and a prostitute. Low.
7. A lad an instant. Not used.