Hebrews mor.

(1.) First mentioned as a principal ingredient in the holy anointing oil (Exodus 30:23). It formed part of the gifts brought by the wise men from the east, who came to worship the infant Jesus (Matthew 2:11). It was used in embalming (John 19:39), also as a perfume (Esther 2:12; Psalm 45:8; Proverbs 7:17). It was a custom of the Jews to give those who were condemned to death by crucifixion "wine mingled with myrrh" to produce insensibility. This drugged wine was probably partaken of by the two malefactors, but when the Roman soldiers pressed it upon Jesus "he received it not" (Mark 15:23). (see GALL.)

This was the gum or viscid white liquid which flows from a tree resembling the acacia, found in Africa and Arabia, the Balsamodendron myrrha of botanists. The "bundle of myrrh" in Cant. 1:13 is rather a "bag" of myrrh or a scent-bag.

(2.) Another word lot is also translated "myrrh" (Genesis 37:25; 43:11; R.V., marg., "or ladanum"). What was meant by this word is uncertain. It has been thought to be the chestnut, mastich, stacte, balsam, turpentine, pistachio nut, or the lotus. It is probably correctly rendered by the Latin word ladanum, the Arabic ladan, an aromatic juice of a shrub called the Cistus or rock rose, which has the same qualities, though in a slight degree, of opium, whence a decoction of opium is called laudanum. This plant was indigenous to Syria and Arabia.

Noah Webster's New International Dictionary of the English Language

(n.) A gum resin, usually of a yellowish brown or amber color, of an aromatic odor, and a bitter, slightly pungent taste. It is valued for its odor and for its medicinal properties. It exudes from the bark of a shrub of Abyssinia and Arabia, the Balsamodendron Myrrha. The myrrh of the Bible is supposed to have been partly the gum above named, and partly the exudation of species of Cistus, or rockrose.