Definify.com
Webster 1913 Edition
frog's-bit
frog′bitˊ
,frog’s-bit
Noun.
(Bot.)
(a)
A European plant (
Hydrocharis Morsus-ranæ
), floating on still water and propagating itself by runners. It has roundish heart-shaped leaves and small white flowers. (b)
An American plant (
Limnobium Spongia
), with similar habits.