sash

sash · noun, verb¹

1. Arabic · borrowed fromشَاش“muslin cloth”
2. English todaysash

From Arabic شَاش (šāš, “muslin cloth”).

sash · noun, verb²

1. French · derived fromchâssis“frame (of a window or door)”
2. English todaysash

From sashes, from metathesis of French châssis (“frame (of a window or door)”), taken as a plural and -s trimmed off by the late 17th century. See also chassis.

Words from the same roots

First known use, by meaning

• circa 1680 The opening part of a window, usually containing the glass panes; either hinged to the jamb, or sliding up and down as in a sash window.