penny ante

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A poker game in which the maximum bet or raise is a penny or other small amount.
• adjective Involving a small amount of money or something of little value or importance.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A small stake in gambling.
• noun poker played for small stakes
• noun A small-scale business transaction

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a business deal on a trivial scale
• noun poker played for small stakes