ball bearing

noun

Definition of ball bearing 

: 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

First Known Use of ball bearing

1860, in the meaning defined above

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The first known use of ball bearing was in 1860

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More Definitions for ball bearing

ball bearing

noun

English Language Learners Definition of ball bearing

: a part of a machine in which another part (such as a metal pole) turns easily

: one of the balls in a ball bearing

ball bearing

noun

Kids Definition of ball bearing

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

2 : one of the balls in a ball bearing

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