Denshi Jisho — Online Japanese dictionary

ジャパンサージョンフィッシュ Japan surgeonfish (Acanthurus japonicus, Indo-West Pacific species of tang found from Indonesia to the Philippines and Ryukyu Islands)
Noun 
ジャーマン・シェパード・ドッグ German shepherd dog
Noun 
若年型糖尿病 じゃくねんがたとうにょうびょう juvenile onset diabetes
Noun 
若年性糖尿病 じゃくねんせいとうにょうびょう juvenile diabetes
Noun 
じゃ じゃぐち faucet; tap
Noun 
じゃが芋 じゃがいも potato (Solanum tuberosum)
Common word, Noun, Usually written using kana alone 
じゃん拳 じゃんけん rock, paper, scissors game
Noun, Suru verb, Usually written using kana alone 
じゃら付く じゃらつく 1: (Usually written using kana alone) to jingle; to jangle; to clink; to chink;
2: to act lasciviously; to act coquettishly
Godan verb with ku ending, Intransitive verb 
じゃじゃ じゃじゃうま 1: (Colloquialism) restive horse;
2: unmanageable person (esp. a woman); shrew; stubborn tomboy
Noun 
じゃ無さそう じゃなさそう does not seem (to be)
Expression, Auxiliary 
じゃん拳ぽん じゃんけんぽん rock, paper, scissors game
Noun, Usually written using kana alone 

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