Denshi Jisho — Online Japanese dictionary

垣根 かきね hedge; fence
Common word, Noun 
垣根越し かきねごし 1: over the fence (e.g. looking, conducting a conversation);
2: (No-adjective) back-fence
Adverb 
垣根越しに見る かきねごしにみる to look over the fence
Expression, Ichidan verb 

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