tube sock

noun

1. a casual sock that is not shaped at the heel.

Word History and Origins

Origin of tube sock¹

First recorded in 1975–80

Example Sentences

The man selling tube socks might stop by, followed by church ladies selling cut fruit.

From Washington Post

If your sock drawer is only filled with ankle, crew, and tube socks — adding compression socks to the mix will vastly improve the quality of your strenuous activities and travel experiences.

From Popular-Science