虹吸 hóngxī to siphon Definitions Defs Origin Strokes Stroke Words Sentences Sents 虹 hóng noun rainbow rainbow; sometimes used metaphorically for a rainbow-shaped bridge; (colloquial) alternate reading used mainly when the character is spoken in isolation (jiàng)吸 xī verb to inhale To breathe in or suck in gases or liquids through the mouth or nose; the opposite of 呼 hū.