plural of butt crack

(idiomatic, vulgar, slang) To get an erection of the penis.

(organic chemistry) The cracking of petroleum hydrocarbons, at high temperature in the presence of steam, in order to produce ethylene, propylene and other light alkenes

(organic chemistry) To crack using steam cracking.

present participle of steam-crack

Third-person singular simple present indicative form of steam-crack

plural of crack train

(US, dialect, dated) Fastest express train between two stops.

(idiomatic) To smile, especially while attempting not to. / (idiomatic) To begin to smile.

plural of crack whore