leatherjacket

noun

1

a

: a filefish (family Monacanthidae)

b

or less commonly leather jack : any of several fishes (genus Oligoplites) of the family Carangidae having the scales reduced and embedded in the skin

especially : a common fish (O. saurus) of both coasts of tropical America

2

: any of several Australian trees with very tough close smooth bark

especially : coachwood sense 1a

3

Australia : a johnnycake pan-fried or baked in hot ashes

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