Sentence:  One <WSD>winterly</WSD> day, about the year when you and I were concerned in being born, the engine-driver of a Scotch express received the ‘clear' from a signal near a little Huntingdon station called Abbots Ripton. He went on and crashed into a goods train and into the thick of the smash a down express mowed its way. 
Meaning of the word marked with <WSD> tags:  Happening in winter.