Denshi Jisho — Online Japanese dictionary

きゅう class, grade, rank; school class, grade
Common word, Noun, Noun suffix 
の木 しなのき Japanese linden (Tilia japonica)
Noun, Usually written using kana alone 
きゅうすう series; progression
Noun, Mathematical term 
きゅうゆう classmate
Noun 
きゅうちょう head of class; monitor
Noun 

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