IPA: /ˈtriːləs/
KK: /ˈtriːləs/
Describing an area that does not have any trees.
The landscape was completely treeless, stretching for miles under the bright sun.
Treeless → It is formed from "tree" (from Old English *treow*, meaning a woody plant) and "-less" (meaning without). The word "treeless" means without trees or lacking trees.
Imagine a place that is 'without' ('-less') any 'woody plants' ('tree') — that's what treeless means.