This form is employed in the Authorized Version of the books of Jeremiah, Ezekiel, Hosea (Joel has "Tyre"), Amos and Zechariah, as follows: (Jeremiah 25:22; 27:3; 47:4; Ezekiel 26:2,3,4,7,15; 27:2,3,8,32; 28:2,12; 29:18; Hosea 9:13; Amos 1:9,10; Zechariah 9:2,3)
Dictionary entry
TYRUS
Smith's Bible Dictionary