poly

1
[pol-ee]
adjective
  1. made of or containing polyester: a poly swimsuit.

Origin of poly

1
by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for polies'

poly

noun plural polys
  1. informal short for polytechnic
adjective
  1. informal short for polyester
  2. informal short for polythene
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