A thickened and hardened part of the skin that develops in response to pressure or friction.

皮肤的厚硬部位，它是对压力或摩擦做出的反应。

English Usage: He developed a callus on his hand from playing guitar too often.

Hindi Usage: उसकी हथेली पर गिटार खेलने से बहुत बार मिर्च आने से एक कॉलस बन गया।

The process of developing a callus on the skin.

在皮肤上形成茧的过程。

English Usage: If you continue to lift weights, your hands will callus over time.

Hindi Usage: यदि आप वजन उठाते रहेंगे, तो आपके हाथ समय के साथ कॉलस हो जाएंगे।