v. To remain present after the agreed or appropriate departure time.
v. To remain present beyond the limits of.
the GNU version of the Collaborative International Dictionary of English
v. To stay beyond the time or the limits of.
The Century Dictionary and Cyclopedia
To stay or delay beyond; stay beyond the limits or duration of: as, to overstay one's time.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. stay too long
Word Usage
"Right, but the loophole is the visa overstay, which is not the same as keeping out people we don't want to enter under any circumstances by denying them even a transit visa."