Tell

general

A behavior that gives away information about a hand.

Live tells: trembling hands often = strong hand, eye contact = strength, reaching for chips out of turn = often weak. Online tells live in timing and bet sizing.

See also

Action
Your turn to act, or the overall betting activity in a hand.
Bad Beat
Losing a hand where you were a heavy statistical favorite.
Board
The community cards dealt face-up in the middle of the table.
Cooler
A hand where two players have very strong holdings — unavoidable losses happen.