Headbolt

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A bolt that is used to secure the head of something (such as the cylinder head of an internal combustion engine).

    "The headbolt heater consists of a hollow steel bolt containing an electric heating element. This device is designed to heat the water jacket and is applied to the engine head by replacing a headbolt."

Example

More examples

"The headbolt heater consists of a hollow steel bolt containing an electric heating element. This device is designed to heat the water jacket and is applied to the engine head by replacing a headbolt."

Etymology

From head + bolt.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.