Noun

• S: (n) rein (one of a pair of long straps (usually connected to the bit or the headpiece) used to control a horse)
• S: (n) rein (any means of control) "he took up the reins of government"

Verb

• S: (v) harness, rein in, draw rein, rein (control and direct with or as if by reins) "rein a horse"
• S: (v) rein, rein in (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"
• S: (v) rein, rein in (stop or check by or as if by a pull at the reins) "He reined in his horses in front of the post office"
• S: (v) rule, harness, rein (keep in check) "rule one's temper"