1. Any of a group of synthetic steroid hormones used to stimulate muscle and bone growth; more than 100 have been developed and each requires a prescription to be used legally in the United States; sometimes used illicitly by athletes to increase their strength
   "The athlete was disqualified after testing positive for 'roids";
   - anabolic steroid

Derived forms: 'roids

Type of: sex hormone, steroid, steroid hormone