[verb] cause to become cracked; "heat and light cracked the back of the leather chair"
[verb] reduce (petroleum) to a simpler compound by cracking
[verb] break into simpler molecules by means of heat; "The petroleum cracked"
[adjective] of the highest quality; "an ace reporter"; "a crack shot"; "a first-rate golfer"; "a super party"; "played top-notch tennis"; "an athlete in tiptop condition"; "she is absolutely tops" Synonyms:ace, A-one, first-rate, super, tiptop, topnotch, tops