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to smoke (e.g. fire); to billow smoke; to smoulder; to smolder
to be hazy; to look dim
焚き火の残り火がまだ烟っているので注意が必要だ。
The embers of the bonfire are still smoldering, so caution is needed.
霧雨に烟る山の風景が幻想的に見えた。
The mountain scenery shrouded in misty rain looked fantastical.
煙突から白い煙が立ち上り空に烟っている。
White smoke rises from the chimney, drifting into the sky.