Sentence:  Breezes blowing from beds of iris quickened her breath with their perfume; she saw the tufted lilacs sway in the wind, and the streamers of mauve-tinted wistaria swinging, all a-glisten with golden bees; she saw a crimson cardinal winging through the foliage, and amorous tanagers <WSD>flashing</WSD> like scarlet flames athwart the pines. 
Meaning of the word marked with <WSD> tags:  To blink; to shine or illuminate intermittently.