injunction definition by American Heritage Dictionary
The act or an instance of enjoining; a command, directive, or order.
Law A court order prohibiting a party from a specific course of action.
Origin: Middle English injunccion, from Late Latin iniūnctiō, iniūnctiōn-, from Latin iniūnctus, past participle of iniungere, to enjoin : in-, in; see in-2 + iungere, to join; see yeug- in Indo-European roots.
A court order to bring a specified activity under control. For example, Company A might ask for an injunction to prevent Company B from using advertising that includes Company A's name or trademark. A court will sometimes issue a preliminary injunction that remains effective until additional evaluation of the issue can lead to the possibility of a permanent injunction.
A court order that either compels or restrains an act by an individual, organization, or government official. In labor-management relations, injunctions have been used to prevent workers from going on strike.