Daijirin (a comprehensive single-volume Japanese dictionary first published in 1988)

(mahjong) all simples: a 役 (yaku, “hand”) that has 2-8 of any of the three main suits, lacking any 么九牌 (yaochūpai, “terminal and honour tiles”), worth 1 翻 (han, “double”)

愛息: one's son

事件: incident, trouble