Top definition
A discrete reference in the homosexual community for a homosexual ("common") male that is both a pitcher ("highest") and a catcher ("denominator").

Such terminology is necessary so that homosexual males can easily and discretely identify themselves to other homosexuals as a top, bottom, or both.
He identified himself as a Highest Common Denominator on his online dating profile to broaden the pool of potential homosexual partners.
by iamred December 07, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug