grease gun
- noun
- /ɡriːs ɡʌn/
Examples
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Either one of you guys know anything about grease guns?
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So Kamon pulled the grease gun away from the bulk oil dispenser and started filling up an outer rod end, stopping a second too.
Fiction book (2000) -
To maintain the machinery, he used a grease gun to apply lubricant to the moving parts.
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The mechanic recommended using a grease gun for more precise application of the lubricant.
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Make sure to clean the nozzle of the grease gun after each use to prevent clogs.
Synonyms
A hand tool that pushes grease into machine parts
A device that puts oil or grease on moving parts
How Automatic
Surface Forms
Morphology
The meaning is directly compositional: 'grease' (lubricant) plus 'gun' (a handheld device that shoots or dispenses) yields a tool for applying lubricant. The extension of 'gun' to mean a dispensing device is common and cross-linguistically recognizable, so a B1 learner who knows both constituents can readily infer the MWE's meaning.
Etymology
Grease gun combines grease, the thick oil used on machines, and gun, because the tool looks and works like a small gun you point and squeeze to push out grease, so it means 'a tool to apply grease'.