Source : Webster's Revised Unabridged Dictionary (1913)

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