Daybed

A bed intended for use during the day, typically functioning as both a sofa and a bed.

The concept comes from ancient Roman and Greek 'kline' - dining and resting couches used during daytime social activities. Romans didn't just sleep in beds; they conducted business, ate meals, and received guests while reclining. The modern daybed preserves this ancient Mediterranean lifestyle where the boundary between sleeping and living furniture was fluid, though we've lost the social aspect of conducting meetings while lying down.