1. (n.) That which induces action, motivation; as a work incentive; that which incites, or has a tendency to incite, to determination or action; that which prompts to good or ill; motive; spur; as, the love of money, and the desire of promotion, are two powerful incentives to action.

2. (a.) Inciting; rousing to action; stimulative.

3. (a.) Serving to kindle or set on fire.