Definition of cassias:
(n) :
(uncountable) The spice made from the bark of members of the genus Cinnamomum other than true cinnamon (C. verum), when they are distinguished from cinnamon.
(n) :
(countable) Such trees themselves, particularly the Chinese cinnamon, Cinnamomum cassia.
(n) :
(countable) Any of several tropical leguminous plants, of the genus Cassia.
(n) :
(countable) Any of several tropical leguminous plants, of the genus Senna.
(n) :
(countable, mistranslation from Chinese) The sweet osmanthus (O. fragrans).