Dictionary.com
Thesaurus.com

spif

British  
/ spɪf /

noun

  1. Former name: perfin.  a postage stamp perforated with the initials of a firm to avoid theft by employees

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of spif

C20: from s ( tamp ) p ( erforated with ) i ( nitials of ) f ( irm )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.