soft-shell

(-s̸hel′)

adjective

  1. having a soft shell
  2. having an unhardened shell as the result of recent molting

noun

a soft-shell animal; esp., a crab that has recently molted

See soft-shell in American Heritage Dictionary 4

adjective also soft-shelled (-shĕldˌ)
Having a soft, brittle, or unhardened shell, often the result of a recent molt.
noun
A soft-shelled aquatic animal.
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