mole
How to Use Mole
Learner’s notesIn plain EnglishMost commonly a skin blemish or the small burrowing animal; also used for a secret infiltrator, and, in chemistry, a unit of quantity.
Word Forms
moled past tense, moles plural, moles plural, moles plural, moles plural, moles plural, moles plural, moles plural, moles singular
Fill the Gap
Can you complete this real example?
The doctor checked an unusual _____ on his back.
Etymology
The skin-spot and animal senses trace back to Old English mal, meaning "spot" or "blemish." The chemistry unit comes from a shortening of "molecule."