soft-shell /ˈsɔf(t)ˌʃɛl/
Soft-shell Soft-shelled a. Having a soft or fragile shell.
Soft-shell clam Zool., the long clam. See Mya.
Soft-shelled crab. Zool. See the Note under Crab, 1.
Soft-shelled turtle. Zool. Same as Soft tortoise, under Soft.
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