IPA: /ˈɡræs.ləs/
KK: /ˈgræs.ləs/
Not having any grass growing on it.
The park was completely grassless after the drought.
Grassless → It is formed from "grass" (from Old English *græs*, meaning a type of green plant covering the ground) and "-less" (meaning without). The word "grassless" means without grass or lacking grass.
Think of being 'without' ('-less') the green covering of the ground ('grass').