Noah Webster's New International Dictionary of the English Language

1. (v. i.) To diminish; to become less; to shrink; to waste or consume away; to become degenerate; to fall away.

2. (v. t.) To make less; to bring low.

3. (v. t.) To break; to disperse.

4. (n.) The process of dwindling; dwindlement; decline; degeneracy.