antimacassar UK /ˌæn.tɪ.məˈkæs.ə/US /ˌæn.tɪ.məˈkæs.ɚ/ noun1 •A cover for the back or arms of a chair or sofa.[…] how could anyone on a three-legged stool under the high top of the sofa sleep? Especially if the fringe of an antimacassar lolled over the top and tickled your neck? — 1942 formsantimacassars