noun
or frog's-bit ˈ ̷ ̷ˌ ̷ ̷
( plural frogbits or frog's-bits )
1. : a European aquatic floating herb ( Hydrocharis morsus-ranae ) with roundish heart-shaped leaves and small white flowers
2. : an American aquatic plant ( Limnobium spongia ) with round-cordate or reniform leaves and sessile or short-stalked spathes