tool

1. tool (noun) — sense 1

Definition: Any physical device meant to ease or do a task.

Example: Several prehistoric tools, including a stone ax, were found during the dig.

2. tool (noun) — sense 2

Definition: Any physical device meant to ease or do a task.: Any piece of equipment used in a profession, such as a craftsman's.

Example: the tools of the trade

3. tool (noun) — sense 3

Definition: Anything that aids someone to perform an operation; an instrument; a means.

Example: Idleness is a tool of the devil.

4. tool (verb) — sense 4

Definition: To work on or shape with tools, e.g., hand-tooled leather.

5. tool (verb) — sense 5

Definition: To equip with tools.

6. tool (verb) — sense 6

Definition: To work very hard.

Example: Do this lab and read this book, now tool, one and all,
And be sure and pass that final quiz or be screwed right to the wall.