mole - noun

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

a spy who works against enemy espionage

spicy sauce often containing chocolate

a small congenital pigmented spot on the skin

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

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

mole - thesaurus

breakwater   bulwark   counterspy   groin   groyne   jetty   mol   seawall