Main Entry: ¹cal·lous

Pronunciation: \ˈka-ləs\

Function: adjective

Etymology: Middle English, from Latin callosus, from callum, callus callous skin

Date: 15th century

1 a : being hardened and thickened b : having calluses <callous hands>
2 a : feeling no emotion b : feeling or showing no sympathy for others : hard-hearted

— cal·lous·ly adverb

— cal·lous·ness noun