deixis
n. in linguistics, the use of a word or phrase whose meaning is dependent on the situation in which it is used. For example, the meaning of The tree on my side of the fence depends on who says it and where that person is standing. Some words, including the personal and demonstrative pronouns and such adverbs as here, there, and now, are always deictic. The psychological interest in deixis stems from the recognition of the different possible perspectives that it entails. —deictic
adj.