What is Mole?

Mole definition and meaning on Dictionary terms:
any of various small insectivorous mammals, especially of the family Talpidae, living chiefly underground, and having velvety fur, very small eyes, and strong forefeet.
a spy who becomes part of and works from within the ranks of an enemy governmental staff or intelligence agency.Compare double agent.
Machinery. a large, powerful machine for boring through earth or rock, used in the construction of tunnels.

RELATED WORDSfreckle, informer, blot, birthmark, nevus, infiltrator, agent