royal fern


noun

a coarse fern, Osmunda regalis, having tall, upright fronds.

Origin of royal fern

First recorded in 1770–80

British Dictionary definitions for royal fern

royal fern

noun

a fern, Osmunda regalis, of damp regions, having large fronds up to 2 metres (7 feet) in height, some of which are modified for bearing spores: family Osmundaceae