Blind

betting

A forced bet posted before the cards are dealt.

There are two: small blind (SB) and big blind (BB). Antes can also be 'big-blind antes' in modern tournament structures.

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).
C-Bet
A bet on the flop by the preflop raiser.