Pronunciation: (un'dur-stud"ē), [key]
—v., -stud•ied, -stud•y•ing,
—n., pl. -stud•ies.
1. to learn (a role) in order to replace the regular actor or actress when necessary.
2. to act as understudy to (an actor or actress): to understudy the lead.
to act or work as an understudy.
a performer who learns the role of another in order to serve as a replacement if necessary.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.