Lōōs'en1, v. t.
(lōōs'n), v. t. [imp. & p. p. LOOSENED; p. pr. & vb. n. LOOSENING.] [A-S. lēsan, lysan. See LOOSE, v. t.]
Sense 1. To make loose; to free from tightness, tension, firmness, or fixedness; as, to loosen a string when tied, or a knot; to loosen a joint; to loosen a rock in the earth.
Sense 2. To render less dense or compact; as, to loosen the earth about the roots of a tree.
Sense 3. To free from restraint.
It loosens his hands, and assists his understanding. Dryden.
Sense 4. To remove costiveness from; to facilitate or increase the alvine discharges of.