Cas"si*do*ny (?), n. [Cf. LL. cassidonium, F. Cassidoine. See Chalcedony.] Bot. (a)
The French lavender (Lawandula Stachas)
. (b)
The goldilocks (Chrysocoma linosyris) and perhaps other plants related to the genus Gnaphalium or cudweed.
© Webster 1913.