Noun leatherjacket has 3 senses
  1. leatherjacket, leatherfish - any of several brightly colored tropical filefishes
    --1 is a kind of filefish
    --1 is a member of Monocanthus, genus Monocanthus
  2. leatherjacket, leatherjack - any of several New World tropical fishes having tiny embedded scales
    --2 is a kind of jack
    --2 is a member of Oligoplites, genus Oligoplites
  3. leatherjacket - tough-skinned larva of certain crane flies
    --3 is a kind of
    grub
,
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