(1):

(n.) A place where persons are confined, or restrained of personal liberty; hence, a place or state o/ confinement, restraint, or safe custody.

(2):

(n.) Specifically, a building for the safe custody or confinement of criminals and others committed by lawful authority.

(3):

(v. t.) To imprison; to shut up in, or as in, a prison; to confine; to restrain from liberty.

(4):

(v. t.) To bind (together); to enchain.