birkebeinar

Etymology
From earlier, the first part from (plural ). The un-suffixed form was made non-standard by an 2016 official spelling decision.

Noun

 * 1)  a participant in an uprising in the 1170s Norway, and, in the following decades, an adherent to the successor political party.
 * 2)  a contestant or participant in any of the popular Birkebeiner races