ball bearing

noun

Definition of ball bearing

  1. :  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

1860

First Known Use of ball bearing

1860


BALL BEARING Defined for English Language Learners

ball bearing

noun

Definition of ball bearing for English Language Learners

  • : 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 Defined for Kids

ball bearing

noun

Definition of ball bearing for Students

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

  2. 2 :  one of the balls in a ball bearing



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