A gum resin gathered from specific Oriental types of Cistus. It offers a pungent smell and is mainly found in making plasters, and fumigation.
A resinous liquid that exudes from Cistus ladaniferus, a shrub which develops in Spain and Portugal, and from C. Creticus and C. salvifolius, which grow in Crete, Syria, etc.
a soft blackish-brown resinous exudate from numerous rockroses found in perfumes especially as a fixative
How would you define ladanum?