Osmund \Os"mund\, n. (Bot.)
A fern of the genus {Osmunda}, or flowering fern. The most
remarkable species is the {osmund royal}, or {royal fern}
({Osmunda regalis}), which grows in wet or boggy places, and
has large bipinnate fronds, often with a panicle of capsules
at the top. The rootstock contains much starch, and has been
used in stiffening linen.
[1913 Webster]