IPA: /ˈbɒtəmˌlænd/
KK: /ˈbɑːtəmˌlænd/
Low land that is often near a river or stream, typically fertile and suitable for agriculture.
The farmers planted crops in the rich bottomland near the river.
Bottomland is formed from "bottom" (from Old English "botm", meaning the lowest part or base) and "land" (from Old English "land", meaning ground or territory). The term refers to low-lying land, often near rivers or lakes, that is typically fertile and suitable for agriculture.
Think of the 'lowest part' ('bottom') of the 'ground' ('land') — that's why bottomland refers to low-lying, fertile areas.