labdanum n 1: 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 [syn: {labdanum}, {gum labdanum}] 2: a soft blackish-brown resinous exudate from various rockroses used in perfumes especially as a fixative [syn: {labdanum}, {ladanum}]
Labdanum \Lab"da*num\, n. (Bot.) See {Ladanum}. [1913 Webster]
Ladanum \Lad"a*num\, n. [L. ladanum, ledanum, Gr. la`danon, lh`danon, fr. lh^don name of a shrub, mastic; cf. Per. l[=a]dan, l[=a]den. Cf. {Laudanum}.] 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}.] [1913 Webster]