v. to study or know a role to such an extent as to be able to replace the normal performer when required
v. to act as an understudy (to someone)
n. a performer who understudies; a standby
the GNU version of the Collaborative International Dictionary of English
v. To study, as another actor's part, in order to be his substitute in an emergency; to study another actor's part.
n. One who studies another's part with a view to assuming it in an emergency.
The Century Dictionary and Cyclopedia
n. Theat., one who has made a special study of a particular part, and is capable of playing that part at a moment's notice in the absence of the actor or actress to whom it is usually assigned.
To memorize (a part) as an understudy.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an actor able to replace a regular performer when required
v. be an understudy or alternate for a role
Word Usage
"If he dies or explodes in scandal, Hannity or some other understudy is waiting in the wings."