Sentence:  There was the day Uncle Izaak had , in an unexpected grandiose gesture , handed over the pretty <WSD>sloop</WSD> to Abel for keeps , on condition that he never fail to let his brother accompany him whenever the younger boy wished . 
Meaning of the word marked with <WSD> tags:  a sailing vessel with a single mast set about one third of the boat's length aft of the bow