Godan verb with 'ru' ending, Intransitive verb
to smoke (e.g. fire); to billow smoke; to smoulder; to smolder
タバコで煙った空気を部屋から出して、新鮮な空気を入れてちょうだい。Let this smoky air out of the room and let some fresh air in. to be hazy; to look dim
Also written 烟る【けむる】