red·shirt 
(rĕdshûrt′)
(rĕdshûrt′)n.
A college athlete who is allowed to practice with the varsity team but is kept out of competition for one year in order to extend the athlete's period of eligibility.
tr.v. red·shirt·ed, red·shirt·ing, red·shirts
To make (a student) a redshirt.
[From the red jerseys worn by such athletes to distinguish them from the regular players.]
- transmittance
- transmitter
- transmitter-receiver
- transmogrification
- transmogrify
- transmontane
- transmundane
- transmutability
- transmutable
- transmutably
- transmutation
- transmutational
- transmutative
- transmute
- transmuter
- transnational
- trans-Neptunian object
- Transnistria
- transoceanic
- transom
- transonic
- transp.
- transpacific
- transparency
- transparent