We can get some idea of how chal- lenging by adopting a simple but intuitively attractive theory of semantics which we can call the definitions theory.We might avoid the decision by picking just one speaker and limiting our semantic description to an idiolect, the technical term for an individual's language Semantics in Linguistics 7 As well, each Monday, viewers will be able to watch two episodes of the 3rd season and a replay.Interpreted by Nathan Fillion, Richard Castle is a famous author of novels policemen who regularly makes one of the sheets to scandal.??Harassed by his publisher, who is none other than his ex-wife, Castle is in failure of inspiration when it becomes the suspect No. Convened by Kate Beckett, the Inspector of the criminal charge of the investigation, Castle is stimulated by this meeting and discovers a new field of action.This theory would simply state that to give the meaning of linguistic expressions we should establish defini- tions of the meanings of words .In particular: can we make a distinction be- tween linguistic knowledge and encyclo- paedic knowledge ?As soon as we begin our task of attaching definitions to words, we will be faced with a number of challenges.Thus meaning is a kind of knowledge.