Koz in Easton's Bible Dictionary
thorn. (1.) A descendant of Judah. 1 Chr. 4:8, "Coz;" R.V.,
"Hakkoz."
(2.) A priest, the head of the seventh division of the
priests
(Ezra 2:61; Neh. 3:4, 21; 7:63). In 1 Chr. 24:10 the
word has
the article prefixed, and it is taken as a part of the
word
"Hakkoz."
Read More about Koz in Easton's Bible Dictionary