柯林斯詞典prickly heat 1. N-UNCOUNT Prickly heat is a condition caused by very hot weather, in which your skin becomes hot, uncomfortable, and covered with tiny bumps. 痱子; 汗疹 返回 prickly heat劍橋詞典→? heat rash 痱子（同 heat rash） 返回 prickly heat