Tam·muz also Tham·muz 
(tämz)
(tämz)n.
The fourth month of the year in the Jewish calendar. See Table at calendar.
[Hebrew tammūz; akin to Iraqi Arabic tabbūz, July, both ultimately from Sumerian dumu-zi, Dumuzi, a dying and rising shepherd god : dumu, son, offspring + zi, true, effective.]