mole in WordNet English dictionary

1. a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away
   breakwater  groin  groyne  mole  bulwark  seawall  jetty 
   
2. a spy who works against enemy espionage
   counterspy  mole 
   
3. the molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the Systeme International d'Unites
   gram molecule  mole  mol 
   
4. small velvety-furred burrowing mammal having small eyes and fossorial forefeet
   mole 
   
5. a small congenital pigmented spot on the skin
   mole 
   
6. spicy sauce often containing chocolate
   mole