Definition of: loosen

(l′sən) v.t.
1. To untie or undo, as bonds or chains.
2. To set free; release.
3. To make less tight, firm, or compact: to loosen the stones of a wall.
4. To effect laxity in the action of (the bowels).
5. To relax the strictness of, as discipline.
—v.i.
6. To become loose or looser. See synonyms under RELAX.
—loos′en·er noun