noun
eating alone; dining by oneself
Casual noun for the act of eating a meal alone; often used in contexts like 一人飯をする or 一人飯が寂しい.
最近、一人飯が増えた。
Lately, I've been eating alone more often.
一人飯は気楽でいい。
Eating alone is nice and relaxing.
Compound of 一人 (ひとり, 'one person, alone') and 飯 (めし, 'meal, cooked rice'). The reading めし for 飯 is a colloquial, often masculine term for a meal.