expression, godan verb (-tsu)
wait expectantly; be full of anticipation; long for
Idiomatic expression literally meaning 'to wait with a crane's neck', i.e., to crane one's neck in eager anticipation. Used when waiting for something with great excitement or longing.
新作の発売を鶴首して待っている。
I'm eagerly awaiting the release of the new work.
彼からの返
Days of waiting expectantly for his reply continued.