Denshi Jisho — Online Japanese dictionary

コソ kousso (African flowering plant, Hagenia abyssinica); kosso; cusso; koso; brayera
Noun, Usually written using kana alone 
コチ flathead (esp. the bartailed flathead, Platycephalus indicus)
Noun, Usually written using kana alone 
コツ knack; skill; trick; secret; know-how; the ropes; hang
Noun, Usually written using kana alone 
こと 1: particle indicating a command;
2: (Female term or language) particle indicating mild enthusiasm;
3: particle indicating a gentle interrogative;
4: particle used to soften a judgment or conclusion
Particle 
コナ Kona (variety of Hawaiian coffee)
Noun 
コマ 1: (Usually written using kana alone) frame (e.g. of film, panel in a comic, etc.);
2: (Usually written using kana alone) scene;
3: (Usually written using kana alone) time block (e.g. of a class schedule)
Noun 
コメ (husked grains of) rice
Noun 
コメ 1: (Abbreviation) comment;
2: (blog) comment
Noun, Suru verb 
こら 1: interjection meant to scold or reprove someone; hey!;
2: interjection to call out to someone; hey!
Conjunction, Interjection 
これ (used to get the attention of one's equals or inferiors) hey; oi; yo
Interjection 
ころ roller; runner; dried whale blubber
Noun, Obscure term 
こん 1: the sound that something makes when it is hit; with a bump;
2: yelp (e.g. of a fox); bark; howl
Adverb taking the 'to' particle 
恋 こい love; tender passion
Common word, Noun 
鯉 こい common carp; koi carp (Cyprinus carpio)
Common word, Noun 
侯 こう marquis; lord; daimyo
Common word, Noun, Noun suffix 
甲 こう 1: carapace; shell;
2: 1st in rank; grade A;
3: instep; back of hand;
4: the A party (e.g. in a contract); the first party
Common word, Noun 
稿 こう manuscript; version; draft
Common word, Noun 
声 こえ voice
Common word, Noun 
肥 こえ manure; night soil; dung; fertiliser; fertilizer
Common word, Noun 
刻 こく 1: archaic period of time (usu. a period of approx. two hours corresponding to one of the signs of the Chinese zodiac);
2: carving; engraving; cutting; mincing;
3: strictness; cruelty
Common word, Noun 
石 こく 1: measure of volume (approx. 180.39 liters, 6.37 cub. ft.);
2: measure of a Japanese-style boat's loading capacity (approx. 278.26 liters)
Common word, Noun 
酷 こく 1: severe; harsh; stringent; rigorous; strict; unfair;
2: (Usually written using kana alone) body (esp. of food, wine, etc.); weight; substance
Common word, Na-adjective, Noun 
腰 こし 1: back; lower back; waist; hips; lumbar region;
2: body (of hair, noodle, paper, etc.); resilience; spring
Common word, Noun 
事 こと 1: thing; matter;
2: incident; occurrence; event; something serious; trouble; crisis;
3: circumstances; situation; state of affairs;
4: work; business; affair;
5: after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to;
6: (Noun suffix) nominalizing suffix;
7: pretending to ...; playing make-believe ...
Common word, Noun 
琴 こと 1: koto (13-stringed Japanese zither);
2: (Archaism) stringed instrument
Common word, Noun 
粉 こな flour; meal; powder
Common word, Noun 

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