Definitions of rear:

• noun:   the side that goes last or is not normally seen
• noun:   the back of a military formation or procession

  Example: "Infantrymen were in the rear"

• noun:   the side of an object that is opposite its front

  Example: "His room was toward the rear of the hotel"

• noun:   the fleshy part of the human body that you sit on
• noun:   the part of something that is furthest from the normal viewer

  Example: "It was hidden in the rear of the store"

• verb:   bring up
• verb:   stand up on the hind legs, of quadrupeds

  Example: "The horse reared in terror"

• verb:   cause to rise up
• verb:   rise up
• verb:   construct, build, or erect
• name:  A surname (very rare: popularity rank in the U.S.: #42386)