(rir) noun
1. The hinder or hindmost part.
2. A place or position at the back of or behind any person or thing.
3. That division of a military force which is last or farthest from the front: opposed to van.
—adjective Being in the rear; last; hindmost. [Aphetic form of ARREAR]

(rir) v.t.
1. To place upright; raise; elevate.
2. To build; erect.
3. To care for and bring to maturity.
4. To breed or grow.
—v.i.
5. To rise upon its hind legs, as a horse.
6. To rise high; tower: The mountain rears above the forest. See synonyms under RAISE. [OE ræran set upright, causative of rīsan rise. Akin to ON reisa raise.]
—rear′er noun