Meaning of “callus” in the English Dictionary

"callus" in British English

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callusnoun [ C ]

uk /ˈkæl.əs/ us /ˈkæl.əs/

(Definition of “callus” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"callus" in American English

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callusnoun [ C ]

us /ˈkæl·əs/

an area of hard, thick skin, esp. on the feet or hands:

If you look at my hands, you will see the calluses of a farmer.
callused
adjective also calloused us /ˈkæl·əst/

He stood looking down at the dark, callused palms of his hands.

(Definition of “callus” from the Cambridge Academic Content Dictionary © Cambridge University Press)