- labdanum, gum labdanum - 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
--1 is a kind of oleoresin
- labdanum, ladanum - a soft blackish-brown resinous exudate from various rockroses used in perfumes especially as a fixative
--2 is a kind of oleoresin
--2 is a substance of common gum cistus, Cistus ladanifer, Cistus ladanum