'Floating manna grass' definitions:
Definition of 'Floating manna grass'
From: GCIDE
- manna grass \manna grass\ n. (Bot.), Any of several tall slender grasses of the genus Glyceria. They have long loose panicles, have a sweet flavor or odor, and grow in moist places. Nerved manna grass is {Glyceria nervata}, and Floating manna grass is Glyceria fluitans. [1913 Webster + WordNet 1.5]