IPA: /ˈnʌtˌɡræs/
KK: /nʌtɡræs/
A type of grass that grows back every year and has small, round tubers that can be eaten.
Nutgrass can be difficult to remove from gardens because it keeps coming back.
Nutgrass is formed from "nut" (from Old English *hnutu*, meaning a hard-shelled fruit or seed) and "grass" (from Old English *græs*, meaning a type of vegetation). The word refers to a type of grass that produces nut-like tubers underground.
Think of a hard-shelled fruit ('nut') that grows in a grassy area ('grass') — that's why nutgrass refers to this type of grass with nut-like tubers.