Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun armyworm

3 senses of armyworm

Sense 1
armyworm, army worm, Pseudaletia unipuncta -- (noctuid moth larvae that travel in multitudes destroying especially grass and grain)
       => caterpillar -- (a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth)

Sense 2
armyworm, Pseudaletia unipuncta -- (moth whose destructive larvae travel in multitudes)
       => noctuid moth, noctuid, owlet moth -- (usually dull-colored medium-sized nocturnal moth; the usually smooth-bodied larvae are destructive agricultural pests)

Sense 3
armyworm -- (larva of fungus gnat that feed on cereals and other grains; they march in large companies in regular order when the food is exhausted)
       => fungus gnat, sciara, sciarid -- (minute blackish gregarious flies destructive to mushrooms and seedlings)