"he opened the window a crack"
"the crack of a whip" "he heard the cracking of the ice" "he can hear the snap of a twig"
"he wanted a shot at the champion"
"there was a crack in the mirror"
"he took a crack at it" "I gave it a whirl"
"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"
"The glass cracked when it was heated"
"His gun cracked"
"his fingers snapped"
"The teacher cracked him across the face with a ruler"
"Registrations cracked through the 30,000 mark in the county"
"The glass cracked"
"The pipe snapped"
"she cracked my password" "crack a safe"
"crack a joke"
"heat and light cracked the back of the leather chair"
"The petroleum cracked"