noun
sleeping alone; lonesome sleep
A literary or poetic term for sleeping alone, often with a sense of loneliness or forlornness. Not an everyday word; more likely encountered in classical or literary contexts.
旅先でのわび寝は、心細いものだ。
Sleeping alone on a journey is a lonely thing.
彼はわび寝の夜を幾度も過ごした。
He spent many nights of lonesome sleep.
独り寝 is a more common and neutral term for sleeping alone, without the strong literary or poetic nuance of わび寝.
Composed of 佗び (wabi, 'lonely, forlorn') and 寝 (ne, 'sleep'). The exact historical derivation is uncertain, but the word is associated with classical Japanese aesthetics of solitude.