Denshi Jisho — Online Japanese dictionary

こと 1: koto (13-stringed Japanese zither);
2: (Archaism) stringed instrument
Common word, Noun 
きん qin (7-stringed Chinese zither); guqin
Noun 
ことざ (constellation) Lyra
Noun 
ことじ bridge of a koto
Noun 
きんしつ 1: qin and se (two different kinds of Chinese zither);
2: happy marriage
Noun 
きんせん heartstrings
Noun 
ことづめ koto plectrum
Noun 
ことどり superb lyrebird (Menura novaehollandiae)
Noun, Usually written using kana alone 
きんきょく koto music
Noun 
一張 こといっちょう one koto
Noun 
瑟相和 きんしつそうわ pair of persons (especially a married couple) being intimate and harmonious; being happily married
Noun, Suru verb 
瑟相和す きんしつあいわす to be happily married; to go together like two zithers
Expression, Idiomatic expression, Obscure term 

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