ball bearing

noun

: a bearing in which the journal turns upon loose hardened steel balls that roll easily in a race

also : one of the balls in such a bearing

Examples of ball bearing in a Sentence

Recent Examples on the Web

For example, look for shower curtain rings fitted with ball bearings. —Shivani Vyas, Better Homes & Gardens, 23 Oct. 2024

There are 2,000 ball bearings, a bicycle chain, and a 1/4 horsepower electric motor swirling you a full revolution every 15 minutes. —Alana Al-Hatlani, Southern Living, 10 Sep. 2024

Choosing the Right Rope Physical fitness experts advise choosing a jump rope that is easy to adjust and uses ball bearings to connect the rope and the handle. —Anna Giorgi, Verywell Health, 10 Sep. 2024

Those empty voids of gravity defied are longer, more suspenseful, and not empty at all, instead filled with the hum of spinning ball bearings and urethane wheels like a thousand bees stuck inside a snare drum. —Zach Harris, Rolling Stone, 6 Aug. 2024

Word History

First Known Use

1860, in the meaning defined above

Kids Definition

ball bearing

noun

1

: a bearing in which the revolving part turns on steel balls that roll easily in a groove

2

: one of the balls in a ball bearing