Definition of mole-hole in US English:

mole-hole

noun

  • A hole or tunnel made or used by a mole; (in extended use) any very narrow tunnel.

Origin

Late 16th century; earliest use found in William Langham (fl. 1597), doctor and herbalist. From mole + hole.

Pronunciation

mole-hole

/ˈməʊlhəʊl/