花器 is read as かき (kaki) and means flower vase.
かき
kaki
はなびら
(flower) petal
はなよめ
bride
かだん
flower bed
はなむこ
bridegroom
かりゅうかい
red-light district
かべん
はなざかり
booming or peaking (in popularity)
かりゅう
かふんしょう
hay fever
はなむすび
rosette
はなうど
Heracleum nipponicum (species of hogweed)
はなごま
cardboard spinning top, shaped and coloured like a flower