'Processionary moth' definitions:

Definition of 'Processionary moth'

From: GCIDE
  • Processionary \Pro*ces"sion*a*ry\, a. [Cf. LL. processionarius, F. processionnaire.] Pertaining to a procession; consisting in processions; as, processionary service. [1913 Webster]
  • Processionary moth (Zool.), any moth of the genus Cnethocampa, especially Cnethocampa processionea of Europe, whose larv[ae] make large webs on oak trees, and go out to feed in regular order. They are covered with stinging hairs. [1913 Webster]