1. tool - Noun
2. tool - Verb
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.
Source: Webster's dictionaryA sharp tongue is the only edge tool that grows keener with constant use. Washington Irving
By and large, language is a tool for concealing the truth. George Carlin
Tragedy is a tool for the living to gain wisdom, not a guide by which to live. Robert F. Kennedy
If you are going to go where corn grows, take a cutting tool with you. Ethiopian Proverb
Who picks a tool unsuited to a task should not complain if it does no more than cut the hand that holds it. Darkovan Proverb
When your only tool is a hammer, every problem looks like a nail. English Proverb