mitre

CONT: En tôle, en poterie ou en maçonnerie, les mitres ont des formes diverses et variées; elles peuvent être scellées ou amovibles (emboîtées sur un mitron), et éventuellement surmontées d'une lanterne, d'un bonnet ou d'une capote.
OBS: Mitron : partie qui sert de support à une mitre de cheminée; par déformation, désigne souvent aussi la mitre elle-même.

CONT: Chimney pots have been documented as early as the 13th Century, although the United States, like much of Europe, largely discovered chimney pots in the mid 1800s. Because of their ability to increase draft up a chimney, they were invaluable in small and large houses alike, as well as in other buildings where fireplaces served as the primary source of heat. Since coal was the fuel of choice, it was of the utmost importance that noxious fumes and soot be vented up the chimney and out of the house.
OBS: Chimney can: (Scotland) A chimney pot.