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):

tablet
    n 1: a slab of stone or wood suitable for bearing an inscription
    2: a number of sheets of paper fastened together along one edge
       [syn: pad, pad of paper, tablet]
    3: a small flat compressed cake of some substance; "a tablet of
       soap"
    4: a dose of medicine in the form of a small pellet [syn:
       pill, lozenge, tablet, tab]

Moby Thesaurus II by Grady Ward, 1.0:

144 Moby Thesaurus words for "tablet":
   Domesday Book, account book, address book, adversaria, album,
   annual, appointment calendar, appointment schedule, arch, barrow,
   blankbook, blotter, bolus, boundary stone, brass, bust, cairn,
   calendar, capsule, cashbook, catalog, cenotaph, classified catalog,
   coat, coating, collop, column, commonplace book, court calendar,
   covering, cromlech, cross, cup, cut, cyclolith, daybook, deal,
   desk calendar, diary, diptych, disk, docket, dolmen, drop,
   engagement book, feuille, film, flap, foil, fold, footstone, grave,
   gravestone, headstone, hoarstone, inscription, journal, lamella,
   lamina, laminated glass, laminated wood, lap, leaf, ledger, log,
   logbook, loose-leaf notebook, lozenge, marker, mausoleum, megalith,
   membrane, memento, memo book, memorandum book, memorial,
   memorial arch, memorial column, memorial statue, memorial stone,
   memory book, menhir, monolith, monument, mound, necrology,
   notebook, obelisk, obituary, panel, pastille, patina, peel, pellet,
   pellicle, petty cashbook, pill, pillar, plait, plank, plaque,
   plaquette, plate, plating, ply, plywood, pocket notebook,
   pocketbook, police blotter, prize, pyramid, rasher, reliquary,
   remembrance, ribbon, rostral column, safety glass, scrapbook,
   scratch pad, scum, shaft, sheet, shrine, skin, slab, slat, slice,
   spiral notebook, stela, stone, stupa, table, testimonial, tomb,
   tombstone, tope, triptych, troche, trophy, veneer, wafer, workbook,
   writing tablet, yearbook



The Free On-line Dictionary of Computing (30 December 2018):

TABLET

   A query language.

   ["Human Factor Comparison of a Procedural and a Non-procedural
   Query Language", C. Welty et al, ACM Trans Database Sys
   6(4):626-649 (Dec 1981)].

   (1994-11-23)


Easton's 1897 Bible Dictionary:

Tablet
   probably a string of beads worn round the neck (Ex. 35:22; Num.
   31:50). In Isa. 3:20 the Hebrew word means a perfume-box, as it
   is rendered in the Revised Version.