1. Noun
A hard or thickened spot or protuberance; a hardening and thickening of the skin or bark of a part, eps. as a result of continued pressure or friction.
2. Noun
an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
Vocabulary classified under Medicine and healthcare
3. Noun
devoid of passion or feeling; hardheartedness
Vocabulary classified under Environmental science
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