man·​drel | \ ˈman-drəl How to pronounce mandrel (audio) \
variants: or less commonly mandril

Definition of mandrel

1a : a usually tapered or cylindrical axle, spindle, or arbor inserted into a hole in a piece of work to support it during machining
b : a metal bar that serves as a core around which material (such as metal) may be cast, molded, forged, bent, or otherwise shaped
2 : the shaft and bearings on which a tool (such as a circular saw) is mounted

Examples of mandrel in a Sentence

Recent Examples on the Web The resin infuses the strands before they are applied to the mandrel. Joe Pappalardo, Popular Mechanics, 4 Apr. 2018 This appears to be a mandrel, or mold, around which carbon fiber is wound for the main body of the spaceship, or BFS. Eric Berger, Ars Technica, 9 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mandrel.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of mandrel

1554, in the meaning defined at sense 1a

History and Etymology for mandrel

Medieval Latin maundrellus, probably ultimately from Old Occitan mandre kingpin

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Time Traveler for mandrel

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The first known use of mandrel was in 1554

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Dictionary Entries Near mandrel



mandrel press

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Cite this Entry

“Mandrel.” Dictionary, Merriam-Webster, Accessed 27 Jun. 2022.

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More Definitions for mandrel


variants: also mandril \ ˈman-​drəl How to pronounce mandrel (audio) \

Medical Definition of mandrel

: the shaft and bearings on which a tool (as a dental grinding disk) is mounted

More from Merriam-Webster on mandrel Encyclopedia article about mandrel


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