Sentence:  Hardly had Mrs. Roebuck driven off when a rusty pick-up truck , father or grandfather of Senor `` Moriarty 's '' Ford sedan , came screeching to a dust swirling stop , and a brown face appeared , its <WSD>nose</WSD> threatened by shards of what had once been the side window . 
Meaning of the word marked with <WSD> tags:  the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals