n. activities conducted using unfair or sneaky tactics. : When they start playing dirty pool, it's time to get mean.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Dirty-poolis always a great word to know.
So is quincunx. Does it mean:
So is ort. Does it mean:
So is doohickey. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.