Cold Call

betting

Calling a raise without having previously been involved in the betting.

Old wisdom said never cold-call; modern theory does it but selectively, mostly with suited or pocket-pair hands in position.

See also

All-In
Betting all your remaining chips.
Ante
A forced bet all players must post before each hand.
Barrel
A continuation bet on a later street (double = flop+turn, triple = + river).
Blind
A forced bet posted before the cards are dealt.