mole

noun

1. the molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the Systeme International d'Unites

Similar word(s): mol

Definition categories: quantity

2. a spy who works against enemy espionage

Similar word(s): counterspy

Definition categories: person, spy

3. spicy sauce often containing chocolate

Definition categories: food, sauce

4. a small congenital pigmented spot on the skin

Definition categories: attribute, blemish, defect, mar

5. a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away

Similar word(s): breakwater, bulwark, groin, groyne, jetty, seawall

Definition categories: man–made, barrier

6. small velvety-furred burrowing mammal having small eyes and fossorial forefeet

Definition categories: animal, insectivore