Top-Sider

[top-sahy-der]
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for topsider

top-sider

n.

kind of casual shoe, 1937, from topside in nautical sense of "upper deck of a ship," where the rubber soles would provide good traction.

Online Etymology Dictionary, © 2010 Douglas Harper