General

boxed pith

A piece of lumber cut so as to enclose the soft central core (i.e., the pith) within the four faces […]

General

boxed mullion

A hollow mullion which houses sash counterweights in a window frame; built up from boards so as to provide a

General

boxed eaves

That part of a roof that projects beyond the exterior wall (i.e., the eaves), which is enclosed by boards and/or

General

box drain

An underground drain which is rectangular in cross section; usually constructed of concrete or brick.

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