Noun has 2 senses

• labdanum(n = noun.substance) 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;


• labdanum(n = noun.plant) ladanum - a soft blackish-brown resinous exudate from various rockroses used in perfumes especially as a fixative;