butt, ass, arse, buttocks, behind, booty.
From the song "Piece of Me" by Britney Spears "They still gon put pictures of my derrière in the magazine" =P
derrière --is french, for bottom, booty, backside, boo-tey
used in U.S. as a nicer substitute
is misspelled by those unknowingly as "daireaire" or such.
Your girl has a fine derrière!
Please, put your derrière down anywhere.