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piss·antalso piss-ant (pĭs′ănt′)Slang
1. One that is insignificant.
2. Obsolete An ant.
Not important; insignificant: "Some pissant Texas court wants to make [the company] pay ... more than $10 billion in reparations" (New Republic).
[Modeled on pismire.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an insignificant or contemptible person
insignificant or contemptible
[C17: from piss + ant]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014