|Origin:||Partly from CRAMP1; partly from cramp 'tool for holding things together' (14-21 centuries), from Low German krampe 'hook'|
to prevent the development of someone or something [= hinder, restrict]:
Stricter anti-pollution laws may cramp economic growth.
to prevent someone from behaving in the way they want to:
Paul said he didn't want Sarah to come along because she cramps his style.
3 [intransitive and transitive] also cramp up
to get or cause cramp in a muscle:
He cramped in the last 200 metres of the race.
Sitting still for so long had cramped her muscles.