Definition of tablet

What does the word tablet mean?

• part of speech: noun

  Thin sheet of ivory, wood, &c., for writing on, esp. each of a set fastened together; (usu. pl.) such set; small slab esp. with or for inscription, as votive t.; small flat piece of prepared substance, esp. (also tabloid n., proprietary name) fixed weight or measure of a drug brought by pressure or addition of gum into convenient shape; (also tablette) projecting horizontal coping of wall. [old French]