Third person is deictic reference to a referent(s) not identified
as the speaker or addressee. For example in English "he", "she",
"they" or the third person singular verb suffix -s, e.g. in "He
sometimes flies."
(http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsThirdPersonDeixis.htm 20.11.06)