晴せい雨う計けいせいうけいMeanings1nounbarometerA somewhat dated or technical term for a barometer; in modern everyday Japanese, 気圧計 (きあつけい) is more common.See also: 気圧計 (きあつけい)昔むかしの天てん気き予よ報ほうでは晴せい雨う計けいがよく使つかわれていた。In old weather forecasts, barometers were often used.