crack

a long narrow opening

a narrow opening; "he opened the window a crack"

a long narrow depression in a surface

a sudden sharp noise; "the crack of a whip"; "he heard the cracking of the ice"; "he can hear the snap of a twig"

a chance to do something; "he wanted a shot at the champion"

witty remark

a blemish resulting from a break without complete separation of the parts; "there was a crack in the mirror"

a usually brief attempt; "he took a crack at it"; "I gave it a whirl"

become fractured; break or crack on the surface only; "The glass cracked when it was heated"

make a sharp sound; "his fingers snapped"

hit forcefully; deal a hard blow, making a cracking noise; "The teacher cracked him across the face with a ruler"

pass through (a barrier); "Registrations cracked through the 30,000 mark in the county"

break suddenly and abruptly, as under tension; "The pipe snapped"

gain unauthorized access computers with malicious intentions; "she cracked my password"; "crack a safe"

break into simpler molecules by means of heat; "The petroleum cracked"