lozenge

noun

1. A thin rhombus, having two acute and two obtuse angles.

   “Wherein the decussis is made within a longilaterall square, with opposite angles, acute and obtuse at the intersection; and so upon progression making a Rhombus or Lozenge figuration [...].”

   “How the junior partner of Hobbs and Dobbs leads her smiling to the carriage with the lozenge upon it, and the fat wheezy coachman!”

   “His sloppy socks were of scarlet wool with lilac lozenges; […]”

   “The floor is constructed from marble lozenges and triangles of every imaginable hue: yellow and pink and all manner of mottled and blotched shades, framed in white.”

2. A small tablet (originally diamond-shaped) or medicated sweet used to ease a sore throat.

   “One saint's day in mid-term a certain newly appointed suffragan-bishop came to the school chapel, and there preached on “The Inner Life.” He at once secured attention by his informal method, and when presently the coughing of Jarvis […] interrupted the sermon, he altogether captivated his audience with a remark about cough lozenges being cheap and easily procurable.”

   “In the same way that Old Europe’s coffeehouses begat insurance companies, he says, today’s political careers beget an unhealthy relationship with throat lozenges.”

verb

1. (transitive)To form into the shape of a lozenge.
2. (transitive)To mark or emblazon with a lozenge.