껍데기

shell; covering

Explanation

[껍떼기]

1. shell; covering
A hard material that wraps around the outside of an egg, clam, etc.

2. skin; cover; wrapper
What is left on the outside of something after its core or kernel has been removed.

Examples
굴 껍데기
달걀 껍데기
새우 껍데기

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