(countable) A pharmacologic agent administered to a person to prevent them from moving, as alternative for physical restraints such as belts, straitjackets, etc.

So as to restrain or hold back.

(law) An agreement that prevents fair competition on the open market, such as an agreement by one party to hire a second party to work within a profession on the condition that the second party will not compete against the first.

(automotive) Any of several restraining systems in a vehicle, such as an airbag, in addition to the seatbelts

plural of restraint of trade

In a restrained way; with restraint.

A theory of judicial interpretation that encourages judges to limit the exercise of their own power, and to avoid striking down laws unless they are obviously unconstitutional.

Full of restraint.

(law) A restriction on expression imposed before the fact against particular speech or ideas (as opposed to restrictions against general subject matter or imposed after the fact against a particular instance of expression).