lad·a·num /ˈlædṇəm, ˈlædnəm/
Lad·a·num n. A gum resin gathered from certain Oriental species of Cistus. It has a pungent odor and is chiefly used in making plasters, and for fumigation. [Written also labdanum.]
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ladanum
n : a soft blackish-brown resinous exudate from various
rockroses used in perfumes especially as a fixative [syn:
labdanum]