from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A bolt shaped like the letter U, fitted with threads and a nut at each end.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A metal fixing in the shape of the letter U, which has a pin or screw bolt closure which fits across the two ends making a closed clamp

from The Century Dictionary and Cyclopedia

  • n. A bar of iron bent into the form of the letter U, fitted with a screw and nut at each end. It is used in car-building to form carriers and supports for brake-rods, chains, and other connections.


Sorry, no etymologies found.


  • Our plumber fastened it to the wall with a U-bolt.

    Water Heater question

  • Spires pushed Jesse down on a long sideways seat and locked his leg shackles to a U-bolt on the van floor.

    The Demon Queen

  • The problem with the U-bolt is that it is at an angle to the sword, so the locknuts can't really get a good grip on the stick.

    roland Diary Entry

  • I need to decide if I want to try to make the U-bolt hold better or just drill a hole in the pommel for a lag bolt.

    roland Diary Entry

  • Down another street we locate Temo the Spring Man, who is occupied pounding a U-bolt into shape on an anvil, having softened the length of straight bolt to a glowing orange with heat from a simple charcoal forge.

    The Song of The Dodo

  • Experts say the best defense from bike thieves is a heavy-duty U-bolt lock.

    KOMO - News - Top Stories

  • "We continue to encourage students to use U-bolt locks and to register their bikes with Transportation," he said.

    Technician RSS

  • "We encourage students to spend a little extra money and buy a U-bolt lock and to call the police if they see anything suspicious," Christofferson said.

    Technician RSS

  • According to Rush the U-bolt lock was not as essential compared to other possible measures both the University and students could be taking.

    Technician RSS

  • Student bicyclists were aware of potential theft problems and knew they were supposed to use U-bolt locks.

    The Battalion


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