Sentence:  One <WSD>morning</WSD> I had been driven to the precarious refuge afforded by the steps of the inn, after rejecting offers from the Celebrity to join him in a variety of amusements. But even here I was not free from interruption, for he was seated on a horse-block below me, playing with a fox terrier. 
Meaning of the word marked with <WSD> tags:  The part of the day from dawn to noon.