Top Definition
Is a small pellet made out of mud and saliva which a bear inserts into his anus before hibernating for the winter, to stop the ants getting in.
"Those pesky ants won't get me this time,not with my tompion" said the bear.
#anus #butt plug #bear #tampon #hibernate
by Big Brown Bear March 18, 2009
5 Words related to Tompion
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