巣 nest, rookery, hive, cobweb, den 11 strokes taught in grade 4 old JLPT 1 #1588 in newspapers Readings Onソウ Kunす、す.くう In Chinese 巢 Words written with it 巣 す nest N3 古巣 ふるす old haunts 卵巣 らんそう ovary 巣立つ すだつ to leave the nest 営巣 えいそう building a nest 病巣 びょうそう focus 巣箱 すばこ birdhouse 空き巣 あきす empty nest 巣立ち すだち leaving the nest 巣食う すくう to build a nest