Meaning of restrain

(verb) to close within bounds, or otherwise limit or deprive of free 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"

restrict (someone or something) so as to make free movement difficult

prevent (someone or something) from doing something; "security guards restrained the reporter from throwing another shoe"

prevent the action or expression of; "hold back your anger"; "keep your cool"; "she struggled to restrain her impatience at the delays"