U bolt

American

noun

a bar of iron bent into the shape of a U , fitted with a screw thread and nut at each end.

U bolt British

noun

a metal bar bent into the shape of a U and threaded at both ends to receive securing nuts: used to secure leaf springs, ring bolts, shackles, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of U bolt

First recorded in 1880–85

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023