Distiller.

Distiller. Any person who:
(1) Produces distilled spirits from any source or substance;
(2) Brews or makes mash, wort, or wash fit for distillation or for the production of distilled spirits (other than making or using of mash, wort, or wash in the authorized production of wine or beer, or in the production of vinegar by fermentation);
(3) By any process separates alcoholic spirits from any fermented substance; or
(4) Making or keeping mash, wort, or wash, has a still in his possession or use.

Source

27 CFR § 19.1

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Scoping language

As used in this part, the following terms shall have the meanings indicated unless either the context in which they are used requires a different meaning, or a different definition is prescribed for a particular subpart, section, or portion of this part:

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