A fern associated with the genus Osmunda, or flowering fern. The most remarkable types may be the osmund royal, or royal fern (Osmunda regalis), which expands in wet or boggy locations, and it has huge bipinnate fronds, frequently with a panicle of capsules towards the top. The rootstock includes much starch, and has been used in stiffening linen.
A fern of this genus Osmunda. Also called water-fern, St. Christopher's herb, and herb-christopher.
A bloom of iron produced in an osmund furnace. See furnace.
any fern regarding the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble rose clusters