Line (poker)
A circle (or an oval on some tables) inside of which is considered
to be the domain of the pot,
with respect to determining whether or not a player must be
forced to complete a bet.
The line is either real, in which case it is actually drawn
on the table (usually in white or black paint or ink) or imaginary;
even if imaginary, it exists, and its existence is sometimes
strictly enforced in games. The line defines the perimeter of
the pot.
Line (general terms)
The betting proposition on a game and/or payoff odds on the
bet.