Definition of surfer's ear in US English:

surfer's ear

(also surfers’ ear)

noun

  • 1= swimmer's ear (now rare).

  • 2A condition characterized by the presence of bony outgrowths (exostoses) in the ear canal, usually associated with long-term exposure to cold water and sometimes resulting in hearing loss.

Origin

1940s; earliest use found in Medical Journal of Australia.