curb (subs.) Copy link Outline I. For a horseII. A low wall or rim1. crĕpīdo, ĭnis, f.2. margo, ĭnis, c. • curb (subs.): I. For a horse: frēnum (pl. -i, or -a): v. bit. Very often fig.: to put a c. upon licence, frena licentiae injicere, Hor.: put a c. and a limit to your anger, pone irae frena modumque, Juv.: to keep pleasures under a c., voluptates sub freno tenere, Sen.: v. bridle. II. A low wall or rim: 1. crĕpīdo, ĭnis, f.: Varr. 2. margo, ĭnis, c.: Varr. (Both words used esp. of banks or breakwaters of stone designed to confine water.)