The American Heritage® Dictionary of the English Language, 4th Edition
n. One that is held over from an earlier time: a political advisor who was a holdover from the Reagan era; a family tradition that is a holdover from my grandparents' childhood.
n. Something left behind, saved or remaining from an earlier time.
n. The distance (at target) by which a rifle scope is aimed higher than the intended point of impact in order to compensate for bullet drop over the distance to the target.
the GNU version of the Collaborative International Dictionary of English
n. Any person or thing remaining from a previous period of use, tenure, etc
The Century Dictionary and Cyclopedia
n. A place of detention; a lock-up.
n. An office-holder who remains in office, or in possession, beyond his regular term: sometimes used attributively.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. keep in a position or state from an earlier period of time
v. continue a term of office past the normal period of time
v. intimidate somebody (with a threat)
v. hold back to a later time
v. hold over goods to be sold for the next season
n. something that has survived from the past
n. an official who remains in office after his term
Word Usage
"Lute, too, is a holdover from the Bush administration - although not a member of the Pentagon phalanx."