Sentence:  The two wooly-headed, intellectual-looking twins laughed. “Well, our dad's name was Zechariah and our mom worked as a <WSD>Zephyrette</WSD> on the California Zephyr passenger train,” Ezekiel explained. 
Meaning of the word marked with <WSD> tags:  (historic) An on-board hostess on the "(California Zephyr)" train, between 1949 and 1970.