Search Result for "rear back":
Wordnet 3.0

VERB (2)

1. rear backwards on its hind legs;
- Example: "the frightened horse reared back"

2. start with anger or resentment or in protest; 



WordNet (r) 3.0 (2006):

rear back
    v 1: rear backwards on its hind legs; "the frightened horse
         reared back"
    2: start with anger or resentment or in protest