A work shift that runs during the early morning hours, as from midnight to 8 A.M.(noun)
The workers on such a shift.(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 "graveyard shift" in a sentence
"Slowing to peer through various half-windowed walls, Brass passed several rooms before he found the CSI graveyard shift supervisor, Gil Grissom, in the break room at a small table, hunkered over a cup of coffee and a pile of papers."