1. The act or an instance of enjoining; a command, directive, or order.
2. Law A court order requiring a party to refrain from doing a particular act or to do a particular act.
[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 the Appendix of Indo-European roots.]
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