transitive verb
or im·polder ə̇m, em+
( -ed/-ing/-s )
Etymology: Dutch inpolderen, from in- in- (I) (akin to Old English in- ) + polder — more at in- , polder
: to make (land that is underwater or periodically flooded) cultivable by the erection of banks of levees to prevent or control inundation and by adequate drainage