a short-sleeved, pullover sport shirt, usually of cotton or cottonlike knit, with a round neckband or a turnover collar.
Origin of polo shirt
First recorded in 1915–20
Also called polo.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a knitted cotton short-sleeved shirt with a collar and three-button opening at the neck
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