[ Its name is supposed to be derived from the similarity of the effects it gives to those of a picture by Claude Lorrain (often written Lorraine). ] A slightly convex mirror, commonly of black glass, used as a toy for viewing the reflected landscape. [ 1913 Webster ]

a. [ L. claudens, p. pr. of claudere to shut. ] Shutting; confining; drawing together; as, a claudent muscle. [ R. ] Jonson [ 1913 Webster ]