or M.B.waistcoat, subs. (clerical).A long coat worn by some clergymen. [M.B. = Mark of the Beast.] See CAPELLA.
1853. DEAN CONYBEARE, in Edinburgh Review, Oct., p. 315. Who does not recognise the stiff aud tie-less neckcloth, the M.B.COAT and cassock waistcoat, the cropped hair and un-whiskered cheek?
1884. Graphic, 20 Sept., p. 307/2. He has begun to affect the strictest clerical garbM.B.WAISTCOAT, hard felt hat with band and tassels.