A piece of clothing worn on the foot, typically made of soft material and covering the ankle or part of the calf. He pulled on a clean cotton sock before sliding his foot into the shoe.
A tubular protective covering for an object such as a golf club, camera lens, or firearm, used to shield it from damage or dirt. She slid a padded sock over the camera lens before packing it in her bag.
A humorous or informal term for a blow or punch. He gave his friend a playful sock on the arm.