The Collaborative International Dictionary of English v.0.48:
Enjoin \En*join"\, v. t. [imp. & p. p. Enjoined; p. pr. & vb.
n. Enjoining.] [F. enjoindre, L. injungere to join into,
charge, enjoin; in + jungere to join. See Join, and cf.
1. To lay upon, as an order or command; to give an injunction
to; to direct with authority; to order; to charge.
High matter thou enjoin'st me. --Milton.
I am enjoined by oath to observe three things.
2. (Law) To prohibit or restrain by a judicial order or
decree; to put an injunction on.
This is a suit to enjoin the defendants from
disturbing the plaintiffs. --Kent.
Note: Enjoin has the force of pressing admonition with
authority; as, a parent enjoins on his children the
duty of obedience. But it has also the sense of
command; as, the duties enjoined by God in the moral
law. "This word is more authoritative than direct, and
less imperious than command." --Johnson.