Noun
sled head (plural sled heads)
(sports, pathology, slang) A concussion or subconcussive injury caused by tobogganing, including luging, skeleton, bobsledding, tubing; that stereotypically leaves the victim woozy or muddle-headed.
sled head (plural sled heads)
Alternative spelling of sledhead (“a fan of sledding”)
Alternative spelling of sledhead (a fan)
Alternative spelling of sled head (an injury)
Source: en.wiktionary.orgsled-head