poly

1
[ pol-ee ]
/ ˈpɒl i /

noun, plural pol·ies.

Informal. polyester(def 2): a blend of poly and cotton.
a fabric or garment made of polyester.

adjective

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. 2019

British Dictionary definitions for polies'

poly

/ (ˈpɒlɪ) /

noun plural polys

informal short for polytechnic

adjective

informal short for polyester
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