Merriam-Webster Collegiate Dictionary - them

 I. pronoun  Date: bef 12th century  objective case of they  1. they 1 — used as object of a verb or preposition took ~ back gave it to ~  2. those — used especially as antecedent to a relative pronoun the best of ~ that speak this speech — Shakespeare — used as the subject of a verb chiefly in nonstandard speech and for humorous effect ~ is fighting words  II. adjective  Date: 1594 nonstandard those — used chiefly in nonstandard speech and for humorous effect