rear1
Pronunciation: /rɪə/
noun
- the back part of something, especially a building or vehicle: the kitchen door at the rear of the house
- the space or position at the back of something or someone: the field at the rear of the church
- the hindmost part of an army, fleet, or line of people: two policemen at the rear fell out of the formation
- (also rear end) informal a person’s buttocks.

Phrases
-
bring up the rear
- be at the very end of a line of people: I made the men walk in front while I brought up the rear
- come last in a race or other contest: the investigation into business failures shows Scotland bringing up the rear
-
take someone in rear
- attack an army from behind: the object of taking in rear all Austrian forces

Origin:
Middle English (first used as a military term): from Old French rere, based on Latin retro 'back'