Noun labdanum has 2 senses
  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
    --1 is a kind of oleoresin
  2. 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
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