Sentence:  Along about the blanching of the east, / When sleep is weirdest and a moment's flight, / Remembered coextensive with the night, / May teem with <WSD>hapful</WSD> years; / as light in smoke / Upon the jumble of Hugh's dreaming broke / A buzz of human voices. 
Meaning of the word marked with <WSD> tags:  Full of happenings; eventful.