The Collaborative International Dictionary of English v.0.48:

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.
          [1913 Webster]

   2. A figure with four equal sides, having two acute and two
      obtuse angles; a rhomb.
      [1913 Webster]

   3. Anything in the form of lozenge.
      [1913 Webster]

   4. Specifically: A small cake of sugar and starch, flavored,
      and often medicated. -- originally in the form of a
      lozenge.
      [1913 Webster]

   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.
      [1913 Webster] Lozenged

The Collaborative International Dictionary of English v.0.48:

Tablet \Ta"blet\, n. [F. tablette, dim. of table. See Table.]
   1. A small table or flat surface.
      [1913 Webster]

   2. A flat piece of any material on which to write, paint,
      draw, or engrave; also, such a piece containing an
      inscription or a picture.
      [1913 Webster]

   3. Hence, a small picture; a miniature. [Obs.]
      [1913 Webster]

   4. pl. A kind of pocket memorandum book.
      [1913 Webster]

   5. A flattish cake or piece; as, tablets of arsenic were
      formerly worn as a preservative against the plague.
      [1913 Webster]

   6. (Pharm.) A solid kind of electuary or confection, commonly
      made of dry ingredients with sugar, and usually formed
      into little flat squares; -- called also lozenge, and
      troche, especially when of a round or rounded form.
      [1913 Webster]

WordNet (r) 3.0 (2006):

lozenge
    n 1: a small aromatic or medicated candy
    2: a dose of medicine in the form of a small pellet [syn:
       pill, lozenge, tablet, tab]

Moby Thesaurus II by Grady Ward, 1.0:

107 Moby Thesaurus words for "lozenge":
   achievement, alerion, animal charge, annulet, argent,
   armorial bearings, armory, arms, azure, bandeau, bar, bar sinister,
   baton, bearings, bend, bend sinister, billet, blazon, blazonry,
   bolus, bordure, broad arrow, cadency mark, canton, capsule,
   chaplet, charge, chevron, chief, coat of arms, cockatrice, coronet,
   crescent, crest, cross, cross moline, crown, device, difference,
   differencing, eagle, ermine, ermines, erminites, erminois,
   escutcheon, falcon, fess, fess point, field, file, flanch,
   fleur-de-lis, fret, fur, fusil, garland, griffin, gules, gyron,
   hatchment, helmet, heraldic device, honor point, impalement,
   impaling, inescutcheon, label, lion, mantling, marshaling, martlet,
   mascle, metal, motto, mullet, nombril point, octofoil, or,
   ordinary, orle, pale, paly, pean, pheon, pill, purpure, quarter,
   quartering, rose, sable, saltire, scutcheon, shield, spread eagle,
   subordinary, tablet, tenne, tincture, torse, tressure, troche,
   unicorn, vair, vert, wreath, yale