Synonyms of 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

   • MOL5

   Also: gram molecule.

2. a spy who works against enemy espionage

   • COUNTERSPY17

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

   • BREAKWATER19
   • GROIN6
   • GROYNE10
   • BULWARK16
   • SEAWALL10
   • JETTY15