underrunner.
The lower of a pair of grinding millstones.
Meaning & usage
The lower of a pair of grinding millstones.
An additional runner added to the bottom of a sledge to protect the main runners in harsh conditions.
A runner (mechanical part intended to guide or aid something else to move) designed to be inserted underneath the item to be moved.
Where this word comes from
From under- + runner.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.