1 [C] [usu.sing] an area of small red spots that appear on your skin when you are ill or have a reaction to sth (皮肤因病或过敏反应而起的)疹: He came out in a rash where the plant had touched him.他给那植物碰到的地方出现疹块。
2 [sing] a rash (of sth) a series of unpleasant events of the same kind happening close together 接二连三(的不愉快事情)
rash²
/ræʃ ||; ræʃ/adj (used about people) doing things that might be dangerous or bad without thinking about the possible results first; (used about actions) done in this way (指人)冲动的,鲁莽的;(指行为)轻率的,仓促的: a rash decision/promise仓促的决定;轻率的承诺 ➔rashlyadv