Poker . a fixed but arbitrary stake put into the pot by each player before the deal.

an amount of money paid in advance to insure an individual's share in a joint business venture.

Informal . an individual's share of the total expenses incurred by a group.

Informal . the price or cost of something.

Poker . to put (one's initial stake) into the pot.

to produce or pay (one's share) (usually fol. by up )

He anted up his half of the bill.

Poker . to put one's initial stake into the pot.

Informal . to pay (usually fol. by up ).