Armyworm

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  armyworm \armyworm\, Army worm \Ar"my worm`\ (Zool.)
     (a) A lepidopterous insect, which in the larval state often
         travels in great multitudes from field to field,
         destroying grass, grain, and other crops. The common army
         worm of the northern United States is the noctuid moth
         ({Pseudaletia unipuncta}, formerly {Leucania unipuncta}.


         The name is often applied to other related species, as
         the cotton worm.
     (b) The larva of a small two-winged fly ({Sciara}), which
         marches in large companies, in regular order. See {Cotton
         worm}, under {Cotton}.
  
     Syn: army worm
          [1913 Webster]
  
     2. the larva of the fungus gnat; -- they march in large
        companies in regular order.
        [WordNet 1.5] Arna

From WordNet (r) 2.0 [wn]:

  armyworm
       n 1: noctuid moth larvae that travel in multitudes destroying
            especially grass and grain [syn: {army worm}, {Pseudaletia
            unipuncta}]
       2: moth whose destructive larvae travel in multitudes [syn: {Pseudaletia
          unipuncta}]
       3: larva of fungus gnat; march in large companies in regular
          order