1. rainfall;〔気象で〕(the amount of) precipitation
    • 昨夜の雨量は50ミリを超えた
    • We had over fifty millimeters of rain last night.
    • この地方の一年の雨量は500ミリを超える
    • The annual precipitation [rainfall] in this district is over 500 mm.
  1. 雨量計a rain gauge