* Verb: To bring up, raise, or nurture. (Example: "She reared her children with love.")
* Noun: The back part of something, especially a vehicle. (Example: "The car had a dent in the rear.")
* Adjective: Located at the back. (Example: "The rear wheels of the car were damaged.")
Let me know the sentence you're looking at and I can tell you what part of speech "rear" is acting as in that specific instance.