Meaning

noun a dark brown to greenish oleoresin that has a fragrant odor and is used as a fixative in perfumes; obtained as a juice from certain rockroses

noun a soft blackish-brown resinous exudate from various rockroses used in perfumes especially as a fixative

originFrom Latin lādanum, from Ancient Greek λήδανον (lḗdanon, “gum”), from λήδον (lḗdon, “rockrose”), from a Semitic language; compare Akkadian 𒆷𒁷𒉡 (ladinnu).

Etymology from Wiktionary, CC BY-SA 3.0