What is the meaning of Cull?

To pick or take someone or something (from a larger group).

To gather, collect.

To select animals from a group and then kill them in order to reduce the numbers of the group in a controlled manner.

(Should we delete this redundant sense?) To kill (animals, etc).

(Can we verify this sense?) To lay off in order to reduce the size of, get rid of.

To selectively not render or process certain objects, such as polygons.

A selection.

An organized killing of selected animals.

An individual animal selected to be killed, or item of produce to be discarded.

A lobster having only one claw.

A piece unfit for inclusion within a larger group; an inferior specimen.

A fool, gullible person; a dupe.

A man or boy.

boy, child

inflection of collir:

1. third-person singular present indicative
2. second-person singular imperative

third-person singular present indicative

second-person singular imperative

Source: wiktionary.org