A person's buttocks.
Used other than figuratively or idiomatically: see back, side.
The back side of an estate: the backyard and outbuildings behind a main house, especially (UK dialect, euphemistic) an outhouse.
The reverse or opposite of anything.
Used other than figuratively or idiomatically: see back, side.
Approaching an obstacle backward
bottom
A term of address for a bot (automated software process).
Resembling a bot (automated software process); botlike.