Definitions
1.verbTo deduct or return an amount from a bill or payment
2.verbTo diminish or lessen something
3.verbTo beat to obtuseness; to deprive of keenness; to blunt; to turn back the point of, as a lance used for exercise.
4.verbTo cut a rebate (or rabbet) in something
5.verbTo abate; to withdraw.
6.adjectiveBlunted, dulled (of a blade, weapon etc.).