bed wet from tears
Archaic poetic expression for a bed soaked with tears, often from grief or longing. Found in classical literature.
古歌に「床の海」と詠まれたのは、涙で濡れた寝床のことであろう。
In old poems, '床の海' probably refers to a bed wet with tears.
The phrase literally means 'sea of the bed', a metaphorical expression for a bed drenched in tears. The exact origin is uncertain, but it appears in classical Japanese poetry.