Top Definition
a piece of string you give your girlfriend cuz you can't afford a ring, if you say it really fast it sounds like promise ring

heard it on the awesome show Still Standing
''hey ya give your gf the promise ring yet?''

''nah i got her a *says it really fast so he won't catch it* promise string''

''huh? thats what i said''
by Skullex May 20, 2008

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