- 1a small dark brown mark on the skin, sometimes slightly higher than the skin around it compare freckle
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- 2a small animal with dark gray fur, that is almost blind and digs tunnels under the ground to live in see molehill
- 3a person who works within an organization and secretly passes important information to another organization or country
- 4(chemistry) a unit for measuring the chemical mass of a substance see mole2
Check pronunciation: mole