Wiktionary
darning egg
n. An egg-shaped ovoid of stone, porcelain, wood, or similar hard material, which is inserted into the toe or heel of a sock to hold it in the proper shape and provide a firm foundation for repairs.
Usage examples of "darning egg".
Granny looked at the cops over the rims of her ancient spectacles and her old fingers went lax on the darning egg.
Her hands were motionless holding the current sock on the darning egg.
On the round table at her elbow is her sweetgrass-bordered sewing basket, woven by Indians, with her scissors and her spools of thread and her wooden darning egg.
This time Keisha sat in her favorite chair with bqth hands full of a sock, a wooden darning egg, a blunt needle, and wool yarn.