Learn how to say Callously correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word callus:
a thickened and hardened part of the skin or soft tissue, especially in an area that has been subjected to friction.
Medicine the bony healing tissue which forms around the ends of broken bone.
Botany a hard formation of tissue, especially new tissue formed over a wound:
the exposed surface will quickly form healing callus
mid 16th century: from Latin callus (more commonly callum) ‘hardened skin’: