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Agrille orgrill (French word fromLatincraticula, small grill) is an opening of several slits side-by-side in a wall, metal sheet or another barrier, usually to allow air or water to enter and/or leave and prevent larger objects (such asanimals) from going in or out.[1]
A similar definition is "a French term for an enclosure in either iron or bronze."[2]
In heating, cooling,ventilation, or a combination thereof, a grille is aperforated cover for anair duct. Grilles sometimes havelouvers which allow the flow of air to be directed.
Aregister differs from a grille in that adamper is included.[3][4] However, in practice, the terms "grille", "register", and "return" are often used interchangeably, and care must be taken to determine the meaning of the term used.[4][5]
Grillwork isdecorativegrating ofmetal,wood,stone, or othermaterial used as a screen, divider, barrier, or as a purelydecorative element. It may function as awindow, either with or withoutglazing. Grillwork may also refer togrilles, decorative front ends ofmotor vehicles. Grillwork is sometimes referred to as simply as agrill or asgrille, but the latter terms do not convey a decorative quality. These words are all derived from theOld Frenchgreille.Other terms are used to refer to such decorative work. If the screen is made from iron, the termironwork is often used. The term in Spanish,reja can also refer to metal fences. If the screen is made from cutouts of wood, the termfretwork is also used.[6]