track suit

noun

a sweat suit, usually with a long-sleeved jacket and long pants, worn by athletes, especially runners, before and after actual competition or during workouts.

Origin of track suit

First recorded in 1950–55

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

Examples from the Web for tracksuit

Contemporary Examples of tracksuit

Others were paired with sportswear-inspired tops—think a tracksuit zip-up made glam with diagonal decorative panels.
Nicolas Ghesquière Presents His Debut Collection for Louis Vuitton
Liza Foreman
March 5, 2014
Wikipedia says sweatpants, otherwise known as tracksuit bottoms, are “one of the most commonly worn items of clothing.”
NBA Players Are Wearing Sweatpants Again, but Now They Cost $550
Sujay Kumar
November 11, 2013
Carter remembers that Oprah directed her to find the “ugliest” tracksuit she could find.
Oprah Winfrey’s Fashion Evolution in ‘Lee Daniels’ The Butler’
Isabel Wilkinson
August 15, 2013
Zidane, ever the class act, stood next to Platini, chatting in a tracksuit.
World Cup Primer
Joshua Robinson
June 12, 2010

British Dictionary definitions for tracksuit

tracksuit

noun

a warm suit worn by athletes, etc, usually over the clothes, esp during training

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