The buttocks, bottom, butt.
In the Eton College field game, any of a group of players consisting of two "shorts" (who try to kick the ball over the bully) and a "long" (who defends the goal).
The rear, back-end.
A one-point score.
The catcher.
Slow.
Not advanced to the required or expected degree; overdue or in arrears.
Behind the scenes in a theatre; backstage.
At or in the rear or back part of something.
So as to come after someone or something in position, distance, advancement, ranking, time, etc.
So as to be still in place after someone or something has departed or ceased to exist.
In a rearward direction.
Backward in time or order of succession; past.
As a result or consequence of.
Responsible for, being the creator or controller of.
After in developmental progress, score, grade, etc.; inferior to.
After in time.
In the past, from the viewpoint of.
Concealed by (something serving as a facade or disguise).
After in physical progress or distance.
In support of.
Underlying, being the reason for or explanation of.
At or to the back or far side of.
The buttocks.
A cut of meat from the rump of an animal.
The hindquarters of a four-legged mammal, not including its legs
A remnant, as in Rump Parliament.
To turn one's back on, to show one's (clothed) backside to, as a sign of disrespect.
To fuck. (Compare bum (verb).)
To cheat.
To ramble; to move (or talk) aimlessly.
To move (someone or something) around.