资料来源 : Webster's Revised Unabridged Dictionary (1913)

Processionary \Pro*ces"sion*a*ry\, a. [Cf. LL. processionarius,
   F. processionnaire.]
   Pertaining to a procession; consisting in processions; as,
   processionary service.

   {Processionary moth} (Zo["o]l.), any moth of the genus
      {Cnethocampa}, especially {C. 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.