Sentence:  I have more than once sat cross-legged in the grass through a <WSD>long</WSD> summer morning and watched without touching while a poppy bud higher than my head slowly but visibly pushed off its cap , unfolded , and shook out like a banner in the sun its flaming vermilion petals . 
Meaning of the word marked with <WSD> tags:  primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified