Sentence:  Another source of NBC pride was its rare film clip of Bix Beiderbecke , but this view of the great trumpeter flew by so fast that a prolonged <WSD>wink</WSD> would have blotted out the entire glimpse . 
Meaning of the word marked with <WSD> tags:  a very short time (as the time it takes the eye to blink or the heart to beat)