煖炉

(1)an open recess in a wall at the base of a chimney where a fire can be built; "the fireplace was so large you could walk inside it"; "he laid a fire in the hearth and lit it"; "the hearth was black with the charcoal of many fires"

(2)火をおこすことができる、煙突の土台の壁に開いたくぼみ

(3)any heating apparatus

(4)暖房装置の総称