Sentence:  Billy Tower lived in the far left house in the <WSD>banjo</WSD> that was Dagenham's version of cul de sacs. The trouble was you could be seen from the house and, in the time it took to walk along the Banjo, drugs could be flushed away. 
Meaning of the word marked with <WSD> tags:  A cul-de-sac with a round end.