Definition of "Mole" :

noun: small velvety-furred burrowing mammal having small eyes and fossorial forefeet

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

noun: a small congenital pigmented spot on the skin

noun: spicy sauce often containing chocolate

noun: a spy who works against enemy espionage

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