四分音符 sìfēnyīnfú quarter note; crotchet Definitions Defs Origin Strokes Stroke Words Sentences Sents 四 sì numeral four the number four; complex form used for financial purposes is 肆 sì分 fēn adverbnumeral [fraction] mathematical fraction; one-tenth; percent音符 yīnfú musical note A symbol used in a musical score to indicate the pitch and duration of a sound.