|Easton's Bible Dictionary|
(Hebrews copher), mentioned in Cant. 1:14 (R.V., "henna-flowers"); 4:13 (R.V., "henna"), is the al-henna of the Arabs, a native of Egypt, producing clusters of small white and yellow odoriferous flowers, whence is made the Oleum Cyprineum. From its leaves is made the peculiar auburn dye with which Eastern women stain their nails and the palms of their hands. It is found only at Engedi, on the shore of the Dead Sea. It is known to botanists by the name Lawsonia alba or inermis, a kind of privet, which grows 6 or 8 feet high. The margin of the Authorized Version of the passages above referred to has "or cypress," not with reference to the conifer so called, but to the circumstance that one of the most highly appreciated species of this plant grew in the island of Cyprus.
Noah Webster's Dictionary
(n.) An old spelling of Camphor.
Int. Standard Bible Encyclopedia
Camphire (2 Occurrences)
Song of Songs 1:14 My beloved is unto me as a cluster of camphire in the vineyards of Engedi. (KJV)
Song of Songs 4:13 Thy plants are an orchard of pomegranates, with pleasant fruits; camphire, with spikenard, (KJV)