Noun backside has 2 senses
- rear, backside, back end - the side of an object that is opposite its front; "his room was toward the rear of the hotel"
--1 is a kind of side, face
--1 has particulars: nape, scruff, nucha; rearward
- buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass - the fleshy part of the human body that you sit on; "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?"
--2 is a kind of body part
--2 is a part of torso, trunk, body
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