Definition of "graveyard shift" []

• 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.

• "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."