Tool

An instrument such as a hammer, saw, plane, file, and the like, used in the manual arts, to facilitate mechanical operations; any instrument used by a craftsman or laborer at his work; an implement; as, the tools of a joiner, smith, shoe-maker, etc.; also, a cutter, chisel, or other part of an instrument or machine that dresses work.

A machine for cutting or shaping materials; -- also called machine tool.

Hence, any instrument of use or service.

A weapon.

A person used as an instrument by another person; -- a word of reproach; as, men of intrigue have their tools, by whose agency they accomplish their purposes.

To shape, form, or finish with a tool.

To drive, as a coach.

the means whereby some act is accomplished; "my greed was the instrument of my destruction"; "science has given us new tools to fight disease"