a tumorlike nodule below a surfer's knee or on the upper area of the foot, caused by pressure on the skin and tissue exerted by the surfboard.
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Also called surfer's knob.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Medicine definitions for surfer's knobs
[ sûr′fərz ]
Tumorlike skin nodules just below the knees, on the tops of the feet, and often on the toes, common among surfers who paddle in a kneeling position.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.