rein in meaning and definition

REIN IN verb

Definition of rein in (verb)

1. stop or slow up one's horse or oneself by or as if by pulling the reins
   • "They reined in in front of the post office"
   • synonyms: rein
2. control and direct with or as if by reins
   • "rein a horse"
   • synonyms: draw rein, harness, rein
3. stop or check by or as if by a pull at the reins
   • "He reined in his horses in front of the post office"
   • synonyms: rein