What is "lozenge coach"

Lozenge \Loz"enge\ (l[o^]z"[e^]nj), n. [F. lozange, losange; perh. the same as OF. losengef flattery, praise, the heraldic sense being the oldest (cf. E. hatchment, blazon). Cf. Losenger, Laudable.]

1. (Her.)

   1. A diamond-shaped figure usually with the upper and lower angles slightly acute, borne upon a shield or escutcheon. Cf. Fusil.

   2. A form of the escutcheon used by women instead of the shield which is used by men.

2. A figure with four equal sides, having two acute and two obtuse angles; a rhomb.

3. Anything in the form of lozenge.

4. Specifically: A small cake of sugar and starch, flavored, and often medicated. -- originally in the form of a lozenge.

   Lozenge coach, the coach of a dowager, having her coat of arms painted on a lozenge. [Obs.]
   --Walpole.

   Lozenge-molding (Arch.), a kind of molding, used in Norman architecture, characterized by lozenge-shaped ornaments.

n. (context historical English) The coach of a dowager, having her coat of arms painted on a lozenge.