Beav-Cleav Share definition Flag Where one's vagina is visible through clothing. Vaginal cleavage; "Beaver" cleavage. "Ew, dude, you can totally see her beav-cleav!""These pants give me hella beav-cleav..." Beav-Cleav by WTF Rob Robster November 11, 2010 0 0 Get merch Get the Beav-Cleav mug. Buy Now — $32.95 See more merch