手    胼    足    胝    胼、胝：手掌、足底的老茧。手掌足底生满老茧。形容经常地辛勤劳动。

胼、胝：手掌、足底的老茧。手掌足底生满老茧。形容经常地辛勤劳动。

Callosities found both on one's hands and feet -- have been working hard

手眼通天    手到病除    手疾眼快    手脚无措    手不释书