noun
furrow; space between ridges
Primarily an agricultural term for the furrow or trench between raised planting ridges. The second gloss 'room with ridged roof' is a rare, possibly historical or architectural use; the main modern meaning is the farming sense.
畝間に水を流して、作物に水をやる。
Water is run through the furrows to irrigate the crops.
畝間を歩いて、雑草を取る。
Walk along the furrows and pull out the weeds.