To restrict (someone or something) to a particular scope or area; to keep in or within certain bounds.
Confinement, imprisonment.
A boundary or limit.
To free from a constraint.
To loosen or undo (something that entangles, fastens, holds, or interlocks).
To free (someone or something) from a constraint; (figuratively) to release (something which has been suppressed, such as emotions or objectionable things).
To relax or slacken (something that clasps or grips, such as the arms or hands).
To become loose or come off.