/məʊl/

noun: mole; plural noun: moles; noun: European mole; plural noun: European moles

 

1.

a small burrowing mammal with dark velvety fur, a long muzzle, and very small eyes, feeding mainly on worms, grubs, and other invertebrates.

“moles have burrowed under the lawn”

synonyms: dialectmouldwarp, mouldywarp,

 

2.

a spy who gradually achieves an important position within the security defences of a country.

“a well-placed mole was feeding them the names of operatives”

synonyms: spy, agent, secret agent, double agent, undercover agent, operative, plant, infiltrator;