Source : Webster's Revised Unabridged Dictionary (1913)

Noctuid \Noc"tu*id\, n. [From L. nox, noctis, night.] (Zo["o]l.)
   Any one of numerous moths of the family {Noctuid[ae]}, or
   {Noctu[ae]lit[ae]}, as the cutworm moths, and armyworm moths;
   -- so called because they fly at night. -- a. Of or
   pertaining to the noctuids, or family {Noctuid[ae]}.

Source : WordNet®

noctuid
     n : usually dull-colored medium-sized nocturnal moth; the
         usually smooth-bodied larvae are destructive agricultural
         pests [syn: {noctuid moth}, {owlet moth}]