bounty

Short definition from Wiktionary

Noun

1. 1
   Generosity; also (countable) an act of generosity.
2. 2
   Something given liberally; a gift.
3. 3
   A reward for some specific act, especially one given by an authority or a government.
4. 4
   A reward for some specific act, especially one given by an authority or a government: A monetary reward for capturing (or, in the past, killing) a person accused or convicted of a crime and who is at large; also, a similar reward for capturing or killing an animal which is dangerous or causing a nuisance.
5. 5
   A reward for some specific act, especially one given by an authority or a government: Money paid to a person when becoming a member of the armed forces, or as a reward for some service therein.
6. 6
   An abundance or wealth.

Verb

1. 1
   To offer a monetary reward for the capturing or killing of.