shell suit
n (Clothing & Fashion) a lightweight tracksuit consisting of an inner cotton layer covered by a waterproof nylon layer
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
shell suit
A lightweight tracksuit made of waterproof material lined with cotton, often used as leisurewear.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited