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2.
a partial or half of an erection
I got me a halvesy and I'm feeling straight as a cucumber.
by tigglebear November 26, 2010
 
1.
When multiple pairs of people contribute to a pot in order to by multiple gifts for one person.

As opposed to halfsies, which is two people splitting a gift for one person.
Jim, Charles, Mary, Debra, Lucas, and Johanna went halvesies on the 3 gifts they bought for their parents on Christmas.
by droppinkings July 03, 2014