Boyd’s Bible Dictionary:
(curved). A head-dress (Ezek. 16:12). Head-dress of priests, kings, and queens (Ex. 28:36-38; 2 Chron. 23:11; Esther 2:17). Symbol of power, honor, and eternal life (Prov. 12:4; Lam. 5:16; 1 Peter 5.4).
“Crown” From Concise Bible Dictionary:
Crown Used by Kings of Romania
The common ensign of royalty and of victory (2 Chron. 23:11); it is also used symbolically for honor or reward; as “a virtuous woman is a crown to her husband” (Prov. 12:4). Paul speaks of those whom he had been the means of converting as his “joy and crown”; his “crown of rejoicing” (Phil. 4:1; 1 Thess. 2:19).
In the AV the word “crown” represents the word zer, the border or molding placed round the top of the ark, the table of showbread, and the altar of incense (Ex. 37:2-27).
In the New Testament the word commonly rendered “crown” is στέθανος, which is more a symbol of victory than of royalty. It is applied to the Son of Man and to others (Rev. 6:2; Rev. 14:14); and to the twenty-four elders in heaven, who cast their crowns before the throne (Rev. 4:4,10); also to the perishable crown won by the victors in the ancient contests, and to the imperishable crown of the Christian (1 Cor. 9:25). This latter is further described as a “crown of righteousness,” “crown of life,” “crown of glory” (2 Tim. 4:8; Jas. 1:12; 1 Pet. 5:4; Rev. 2:10). These may refer to the same crown, viewed in different aspects. The Christian is exhorted to beware that no man take his crown (Rev. 3:11).
Another Greek word, also translated “crown,” is really DIADEM, διάδημα, and was the word used for the royal crown of ancient eastern kings. We read of it only in reference to the Lord Jesus as having on His head “many diadems,” also as upon the “seven heads” of the “great red dragon,” and on the “ten horns” of the head of the future Roman empire (Rev. 12:3; Rev. 13:1; Rev. 19:12).
“Crown of Thorns” From Concise Bible Dictionary:
The crown placed in derision on the head of the Lord Jesus, when arrayed in a scarlet robe. Though applied to His sacred head by the rough soldiers, it was connived at by Pilate, who presented the Lord in this garb to the Jews, but which only drew forth their cry, “Crucify Him.” We read that the robe was taken off Him, but nothing is said of the crown, so that He may have worn that on the cross. It is supposed to have been made of the Arabian nabk, which has flexible branches with very sharp thorns, and ivy-like leaves: mocking the Lord, as some think, both as a king and as a victor (Matt. 27:29; Mark 15:17; John 19:2,5).
Nabk – Ziziphus spina-christi
Strong’s Dictionary of Hebrew Words: