1
to row;to paddle;to scull;to pull (the oars)
彼らは池でボートを漕いでいる。
They are rowing a boat on the pond.
2
to pedal (a bicycle, etc.)
彼は、自転車を一生懸命こいだ。
He was pumping the pedals of the bicycle hard.
3
to swing (on a swing)
4
to work (a hand pump)
5
to push through (a thicket, deep snow, etc.)