弦 
弦 ³xián {D} n. ①string; bowstring ②string of a musical instrument ③〈topo.〉 spring (of a watch/etc.) ④〈math.〉 ⓐchord ⓑhypotenuse
弦 弦 [xián] bow string; string of musical instrument; watchspring; chord (segment of curve); hypotenuse; CL:根[gēn] 心弦 心弦 ⑤ [xīnxián] heartstrings 琴弦 琴弦 [qínxián] a string (of stringed instrument) 弦乐 弦乐 [xiányuè] string music 弦外之音 弦外之音 [xiánwàizhīyīn] overtone (idiom); meaning beyond the words; implied meaning; reading between the lines 扣人心弦 扣人心弦 [kòurénxīnxián] to excite; to thrill; exciting; thrilling; cliff-hanging 弦外之意 弦外之意 [xiánwàizhīyì] variant of 弦外之音, overtone (idiom); meaning beyond the words; implied meaning; reading between the lines 
弦 弦 bowstring / - / bow mysterious bowstring 外 外 outside / - / evening magic wand outside 之 之 of / building block / - of 意 意 idea / - / sound heart idea 弦