What does "nutsedge" mean?

Any of certain species of invasive perennial sedge, of the genus Cyperus, that have edible, nutlike tubers.

What is a synonym for "nutsedge"?

Common synonyms include: cyperus rotundus, nut grass, nut sedge, nutgrass.

noun

noun ·Rare ·Advanced level

Noun

1
Any of certain species of invasive perennial sedge, of the genus Cyperus, that have edible, nutlike tubers. US
2
a widely distributed perennial sedge having small edible nutlike tubers wordnet

From nut + sedge.