Noah Webster's New International Dictionary of the English Language

1. (v. t.) To spend, consume, apply, or employ; as to expend energy; to use up or distribute, either in payment or in donations; to spend; as, they expend money for food or in charity; to expend time labor, and thought; to expend hay in feeding cattle, oil in a lamp, water in mechanical operations.

2. (v. i.) To be laid out, used, or consumed.

3. (v. i.) To pay out or disburse money.