prat (
http://definr.com/prat)
n : the fleshy part of the human body that you sit on [syn:
buttocks,
nates,
arse,
butt,
backside,
bum,
buns,
can,
fundament,
hindquarters,
hind end,
keister,
posterior,
rear,
rear end,
rump,
stern,
seat,
tail, {tail
end},
tooshie,
tush,
bottom,
behind,
derriere,
fanny,
ass]