deixis

n. (Linguistics) word whose reference relies completely on context

In pragmatics and linguistics, deixis (Greek: δειξις display, demonstration, or reference, the meaning "point of reference" in contemporary linguistics having been taken over from Chrysippus, Stoica 2,65) is a process whereby words or expressions rely absolutely on context. The origo is the context from which the reference is made—in other words, the viewpoint that must be understood in order to interpret the utterance. (If Tom is speaking and he says "I", he refers to himself, but if he is listening to Betty and she says "I", then the origo is with Betty and the reference is to her.) A word that depends on deictic clues is called a deictic or a deictic word. Deixis is a type of exophora.
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Noun
1. the function of pointing or specifying from the perspective of a participant in an act of speech or writing; aspects of a communication whose interpretation depends on knowledge of the context in which the communication occurs
(hypernym) semantics

n. deixis, word whose reference relies completely on context (Linguistics)