in limine

Etymology
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Adverb

 * 1)  At the beginning, as a preliminary matter; specifically, before a particular procedure or proceeding takes place.

Adjective

 * 1)  Pertaining to a request made at the start of a trial that the judge rule that certain evidence may not be introduced in a trial; most common in criminal trials where evidence is subject to constitutional limitations, such as statements made without Miranda warnings.