1. noun /tuːl/
a) A mechanical device intended to make a task easier
Hand me that tool, would you?
b) equipment used in a profession, e.g., tools of the trade
These are the tools of the trade. <!not used outside this phrase!
2. verb /tuːl/
a) to work on or shape with tools, e.g., hand-tooled leather
Dude, hes not your friend. Hes just tooling you.
b) to equip with tools
Wikipedia foundation.