the world > matter > properties of materials > temperature > heat > heating or making hot > that which or one who heats > [noun] > a device for heating or warming > devices for heating buildings, rooms, etc. > hearth or fireplace > raised margin round hearth (1)
A raised margin or edging around an oast, to confine the hops; also round a bed in a garden or hothouse, or round a hearth, to serve as a fender.