tablet in WordNet English dictionary

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