Meaning of “tool” - Learner’s Dictionary

tool

noun [ C ] uk us /tuːl/
EQUIPMENT

B2 a piece of equipment that you use with your hands in order to help you do something

HELP

something that helps you to do a particular activity:

Computers are an essential tool for modern scientists.
→ See also power tool

(Definition of “tool” from the Cambridge Learner’s Dictionary © Cambridge University Press)