気閘 is read as きこう (kikou) and means airlock.
きこう
kikou
きずく
to regain consciousness
きはい
tone (of the market)
きび
sensation
かたぎ
disposition
きがかり
worry
きしょう
weather (conditions)
きぶん
feeling
きもち
preparedness
きおん
(air) temperature
きざ
affected
きあつ
atmospheric pressure
きがる
ease