- Term applied to a wide variety of chairs with arms, to distinguish them from side chairs which have no arms.
- Wood of trees belonging to the genus Quercus, of the beech family. It is a durable wood that has a distinctive coarse grain, used in cabinetry, flooring, paneling, musical instruments, ship interiors and moldings, panel painting, and sculptures.
- Having the form or outline of a polygon with three sides and three angles.
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