Sentence:  Long after his cigar burnt bitter, he sat with eyes fixed on the blaze. When the <WSD>flames</WSD> at last began to flicker and subside, his lids fluttered, then drooped; but he had lost all reckoning of time when he opened them again to find Miss Erroll in furs and ball-gown kneeling on the hearthnb.... 
Meaning of the word marked with <WSD> tags:  The visible part of fire; a stream of burning vapour or gas, emitting light and heat.