床 means 'floor'

These essays teach vocabulary for home furnishings (futons, beds, tables, desks, chairs, and shelves) and flooring. Two essays explore the alcove known as a tokonoma. You'll also learn the figurative meanings of "putting away bedding" and "flipping over a table." Beyond that, you'll discover terms for "clinical," "power struggle," "barbershop," "putting plans on ice," "position of authority in a government or company," and "hotbed of crimes," even delving into matters of floor area, dentures, air circulation, windfalls, faultfinding, Bon offerings to ancestors, trellises, hospital size, theater stages, a Guinness world record, round-table conferences, and dining platforms across rivers.