一唱三叹 yīchàngsāntàn one singer and three joining in Definitions Defs Origin Strokes Stroke Words Sentences Sents 一 yī numeral one one; the number 1; single; alone唱 chàng verb to sing to sing; to chant; to perform according to a melody三 sān numeral three the number three; 3叹 嘆 tàn to chant (bound form) To chant, recite, or intone a verse in a rhythmic, elongated voice. Often used in 咏叹 yǒngtàn.