present participle 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

A species of willow native to Europe and western Asia, Salix fragilis.

plural of crack fic

(countable, fandom slang) A work of fan fiction that is absurd, surprising or ridiculous, often intentionally. / (uncountable, fandom slang) Such fan fiction collectively.

(idiomatic) To penetrate / (idiomatic) To overcome, get by

simple past tense and past participle of crack a book