Top Definition
A sperm donor, usually some poor bastard who's been sucked in to providing swimmers for a friend.
"He's the sponor"

"What you need, is a sponor not a boyfriend"
by Fiveby5 September 04, 2008
5 Words related to Sponor

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.