1.nounA train that calls at only some stations it passes between its origin and destination, typically just the principal stations
2.nounThe act or practice of abstaining from food or of eating very little food.
3.nounThe period of time during which one abstains from or eats very little food.
"Lent and Ramadan are fasts of two religions."
4.verbTo restrict one’s personal consumption, generally of food, but sometimes other things, in various manners (totally, temporally, by avoiding particular items), often for religious or medical reasons.
"Muslims fast during Ramadan and Catholics during Lent."