\Mate`las`s['e]"\, a. [F., p.p. of matelasser to
cushion, to cover as with a mattress, fr. matelas mattress.
See {Mattress}.]
Ornamented by means of an imitation or suggestion of
quilting, the surface being marked by depressed lines which
form squares or lozenges in relief; as, matelass['e] silks.

\Mate`las`s['e]"\, n.
A quilted ornamented dress fabric of silk or silk and wool.