an area of thick hard skin on a hand or foot, usually caused by rubbing 胼胝,老茧(手、足上的硬皮) The calluses on her palm showed how hard she had had to work. 她手掌上的老茧显示出她有多努力工作。
Word Originmid 16th cent.: from Latin callus (more commonly callum) ‘hardened skin’.