sled-head, sledhead

From sled +‎ head. From being an issue with the head due to a sled.

sled head (plural sled heads)

1. (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.
   • 2020 July 26, Matthew Futterman, “Sledhead”, in New York Times‎^[1]:

     “They would say, ‘I got a real sled head today,’” Morris said. Then they would go take another run, and several more the next day. “You get sucked into thinking it’s not a big deal.”

• punch drunk

From sled +‎ -head.

sled head (plural sled heads)

1. Alternative spelling of sledhead (“a fan of sledding”).

• Ledheads