cull

Short definition from Wiktionary

Verb

1. 1
   To pick or take someone or something (from a larger group).
2. 2
   To gather, collect.
3. 3
   To select animals from a group and then kill them in order to reduce the numbers of the group in a controlled manner.
4. 4
   To kill (animals etc).
5. 5
   To lay off in order to reduce the size of, get rid of.
6. 6
   To selectively not render or process certain objects, such as polygons.

Noun

1. 1
   A selection.
2. 2
   An organized killing of selected animals.
3. 3
   An individual animal selected to be killed, or item of produce to be discarded.
4. 4
   A lobster having only one claw.
5. 5
   A piece unfit for inclusion within a larger group; an inferior specimen.
6. 6
   A fool, gullible person; a dupe.
7. 7
   A man or boy.

Proper noun

1. 1
   A surname.