貢ぎ is read as みつぎ (mitsugi) and means tribute.
みつぎ
mitsugi
こうけん
contribution (furthering a goal or cause)
こうしん
paying a tribute
みつぎもの
tribute
こうけんりえき
contribution margin
こう
みつぐ
to present (money or gifts) to a monarch (feudal lord, etc.)
こうふ
tribute and taxation
こうのう
ちょうこう
bringing tribute
ねんぐまい
annual rice tax
ねんぐのおさめどき
time to pay the piper
ねんぐ
annual tribute