restrain, keep, keep back, hold back -- (keep under control; keep in check; "suppress a smile"; "Keep your temper"; "keep your cool")
restrict, restrain, trammel, limit, bound, confine, throttle -- (place limits on (extent or access); "restrict the use of this parking lot"; "limit the time you can spend with your friends")
restrain, confine, hold -- (to close within bounds, limit or hold back from movement; "This holds the local until the express passengers change trains"; "About a dozen animals were held inside the stockade"; "The illegal immigrants were held at a detention center"; "The terrorists held the journalists for ransom")