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Shell

/ʃel/

An outer covering or protective layer that encases something.

Synonyms:

This word has no antonyms

I found a shell on the beach.They shell the peanuts before eating them.

From Old English scell or sciell, originating from Proto-Germanic skaljo, related to Dutch schel, German Schale, and Latin calyx.

17 mentions per 1 million words

Moderate

Hint: Frequency according to COCA