1. (

• 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 ;

2. (

• labdanum ,
• ladanum

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