Top Definition
A little foam ring that was put around the number nine on older cellphones, before we used flip-phones.
This was used to avoid accidentally calling 911 while the phone was in your pocket.
Fire stations used to give them out for free.
"Whats that thing peeling off your phone?"
"Its my nine guard, it won't stick"
by Lovelytoes May 18, 2009
5 Words related to Nine Guard

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