Cyrus

Boyd’s Bible Dictionary:

(sun). Fourier of the Persian empire (Dan. 6:28; 11:13; 2 Chron. 36:22). United Media to Persia. Conquered Babylon, B. C. 538, and reigned over the consolidated empire till B. C. 529. A guardian and liberator of captive Jews (Isa. 44:28; 45:1-7). Daniel was his favorite minister. See Daniel, also (Ezek. 1:1-4; 3:7; 4:3; 5:13-17; 6:3).
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Concise Bible Dictionary:

Called several times in scripture “the king of Persia,” though from the monuments he is found to have been also king of Elam, and is otherwise called the founder of the Persian empire. On his taking Babylon, the second great Gentile empire of Daniel was set up. He was prophesied of by name long before his birth; that he would be God’s shepherd, to perform all His pleasure, and that he would say to Jerusalem, “Thou shalt be built; and to the temple, Thy foundation shall be laid.” He is also called the anointed of Jehovah, to subdue nations (type of Christ restoring Judah in the last days) (Isa. 44:28; Isa. 45:1). When the 70 years’ captivity of which Jeremiah prophesied were expired (Jer. 25:12; Jer. 29:10), God stirred up the spirit of Cyrus, and a proclamation was made that the house of the Lord God of Israel was to be rebuilt, and permission was given to the captives to return. He also restored the holy vessels that had been carried from Jerusalem to Babylon. It was called the first year of Cyrus, when he began to reign alone over Babylon (Ezra 1:1-11; 2 Chron. 36:22-23). This would be about B.C. 536, the 70 years of captivity having begun in B.C. 606, the date of the first captivity of Judah. Daniel continued till the reign of Cyrus, and speaks of his third year (Dan. 6:28; Dan. 10:1).
An ancient cylinder speaks of the forces of Cyrus as “marching like a cloud, and his army as the waters of a river: opposition comes to nothing before him.” Daniel, in the vision of the kingdom founded by Cyrus, and seen under the figure of a ram, saw it pushing “westward, and northward, and southward; so that no beasts might stand before him, neither was there any that could deliver out of his hand; but he did according to his own will, and became great” (Dan. 8:4). For a list of Persian kings see PERSIA.
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Strong’s Dictionary of Hebrew Words:

Transliteration:
Kowresh
Phonic:
ko’-resh
Meaning:
or (Ezra 1:1 (last time),2) Koresh {ko'-resh}; from the Persians; Koresh (or Cyrus), the Persian king
KJV Usage:
Cyrus

Jackson’s Dictionary of Scripture Proper Names:

possess thou the furnace

Potts’ Bible Proper Names:

The sun; light; spiritual sense:―a hero of Persian history, Isa. 45:1. {Sol}