Motion given by inherent powers, without external impulse.

Tyria jacobaeae, a Eurasian moth with brilliant red and black wings

plural of perpetual motion machine

(derogatory, slang) An objectionable person.

plural of son of a motherless goat

A fly of the subfamily Psychodinae of the nematoceran family Psychodidae.

plural of moth fly

Synonym of diesel engine

Thaumetopoea processionea, a processionary native to oak forests across southern Europe, also occurring as an invasive species in northern Europe.

Any insect of the family Ithonidae.