Top Definition
person who gives money to a charity or fundraiser
The DONATOR gave a large sum of money to help Habitat for Humanity.
by DONATOR June 04, 2010
slang term for sperm donater, father of someone's child, part-time parent, usually a deadbeat dad/mom. Often misspelled as "donater".
Sam is a real jerk! He's the donator that never sees his kids.
by ziggeerose June 01, 2009

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