n.
The buttocks; the rear.
[French, behind, from Old French deriere, in back of, from Vulgar Latin *dē retrō : Latin dē, from, of; see de- + Latin retrō, back; see retro-.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
