noun a sudden sharp noise.
— synonyms: crack, snap
noun the act of cracking something.
— synonyms: fracture, crack
noun the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process).
Examples
“It's been so dry, the ground is starting to crack.”
“When I tried to stand on the chair, it cracked.”
“Anyone would crack after being hounded like that.”