- constraint, restraint - the state of being physically constrained; "dogs should be kept under restraint"
--1 is a kind of confinement
--1 has particulars: cage - restraint, constraint - a device that retards something's motion; "the car did not have proper restraints fitted"
--2 is a kind of device
--2 has particulars:air bag; airbrake, dive brake; arrester, arrester hook; band; brake; brake pads; brake shoe, shoe, skid; catch, stop; chain; fastener, fastening, holdfast, fixing; gag, muzzle; leash, tether, lead; lock, ignition lock; muzzle; safety belt, life belt, safety harness; sea anchor, drogue; shackle, bond, hamper, trammel, trammels; trammel - constraint - the act of constraining; the threat or use of force to control the thoughts or behavior of others
--3 is a kind of restriction
--3 has particulars: swaddling clothes