Sentence:  ... his eyes fell upon the instantly recognizable if somewhat battered form of his own bicycle bell. ... 'Hold up there!' he cried, and 'Enough of that! Let loose that <WSD>velocipede</WSD>!'/ Archroy heard the Irishman's frenzied cries and released his grip. Marchant toppled to the dust in a tangle of flailing spokes. 
Meaning of the word marked with <WSD> tags:  A bicycle.