calluses

"After years of playing guitar, he developed calluses on his fingertips. "

"After his broken arm healed, X-rays showed healthy calluses forming around the fracture, bridging the bone fragments. "

"The gardener was pleased to see tiny calluses forming on the stems of the rose cuttings, a sign that they would soon develop roots. "

"The entomologist used a magnifying glass to examine the calluses, the shiny spots on the horse fly's face, to help identify the species. "

"The gardener's hands callused after a summer of digging in the soil. "