Bound

To tie; to confine by any ligature.

To cohere or stick together in a mass.

"Just to make the cheese more binding"

To be restrained from motion, or from customary or natural action, as by friction.

"I wish I knew why the sewing machine binds up after I use it for a while."

To exert a binding or restraining influence.

"These are the ties that bind."

(with infinitive) Obliged (to).

"You are not legally bound to reply."

(of a morpheme) That cannot stand alone as a free word.

(of a variable) Constrained by a quantifier.

Constipated; costive.