O*paque" (?), a. [F., fr. L. opacus. Cf. Opacous.]
1.
Impervious to the rays of light; not transparent; as, an opaque substance.
2.
Obscure; not clear; unintelligible.
[Colloq.]
© Webster 1913.
O*paque", n.
That which is opaque; opacity.
Young.
© Webster 1913.