Definition of material witness in English:

material witness

Syllabification: ma·te·ri·al wit·ness

noun

US Law
  • A witness whose evidence is likely to be sufficiently important to influence the outcome of a trial.
    More example sentences
    • Elements of both crimes are clearly demonstrated in the declarations of the material witnesses.
    • A federal district court judge says the Justice Department may not jail material witnesses indefinitely.
    • A person who was eyewitness to an event can be a material witness.

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Pronunciation: kəːf
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a slit made by cutting with a saw