redshirt

 
Pronunciation: /ˈrɛdʃəːt/

noun

  • 1US informal a college athlete who is withdrawn from university sporting events for a year to develop their skills and extend their period of playing eligibility by a further year at this level of competition: [as modifier]: a redshirt freshman who had never started a college game and wasn’t expecting to start in one this year
  • 2a supporter of Garibaldi, in particular one of the thousand who sailed with him in 1860 to conquer Sicily.

verb

[with object] US informal
  • keep (an athlete) out of university competition for a year: he was less developed at the outset, so he was redshirted
  • [no object] (of a college athlete) be barred from university competition for a year: he redshirted last season

Origin:

from the red shirts worn by such athletes in practices with regular team members