\They\ ([th][=a]), pron. pl.; poss. {Theirs}; obj. {Them}.
[Icel. [thorn]eir they, properly nom. pl. masc. of s[=a],
s[=u], [thorn]at, a demonstrative pronoun, akin to the
English definite article, AS. s[=e], se['o], [eth][ae]t, nom.
pl. [eth][=a]. See {That}.]
The plural of he, she, or it. They is never used adjectively,
but always as a pronoun proper, and sometimes refers to
persons without an antecedent expressed.
      Jolif and glad they went unto here [their] rest And
      casten hem [them] full early for to sail. --Chaucer.
      They of Italy salute you.                --Heb. xiii.
                                               24.
      Blessed are they which do hunger and thirst after
      righteousness.                           --Matt. v. 6.
Note: They is used indefinitely, as our ancestors used man,
      and as the French use on; as, they say (French on dit),
      that is, it is said by persons not specified.