Something relating to or used for overnight travel.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "overnighter" in a sentence
"You didn't complain about the rest area overnighter or having to put up with a visit to my in-laws."
"The proverbial bat in the belfry, a boy trapped in a bathroom, and a witching hour wander deep into the heart of a century old tunnel provided the eerie highlights of my recent overnighter at Mina Dos Estrellas, not far from Tlalpujahua in northeastern Michoacan (see map)."
"You want a casual float - can do, how about lets pack in 7 miles on an overnighter for native brookies in the smokies or wild rainbows in the cohutta, sure sounds great."