Poker Session (poker)
1) With respect to a given player, a period of playing cards,
from the point at which the player first sits down to the table
until he cashes out (or leaves the table broke).
2) With respect to a group, the period of time for which the
game lasts, from the deal of the first hand until it breaks
up for lack of players, or due to a prearranged ending time.
For both meanings, sometimes called poker session.