Answer: DINER
DINER is a crossword puzzle answer that we have spotted 100 times.
    - Mel's on "Alice," for one
 
    - Where to work on the side
 
    - Refurbished caboose, maybe
 
    - 24-hour eatery, maybe
 
    - Roadside establishment
 
    - Railroad car
 
    - Converted railroad car, maybe
 
    - Where rye is "whiskey"
 
    - "Adam and Eve on a raft" site
 
    - Place for hash browns
 
    - Eatery
 
    - One in a booth, maybe
 
    - Car on a train
 
    - Setting for Edward Hopper's "Nighthawks"
 
    - 1982 Levinson film about an eatery
 
    - 1982 movie set in an eatery
 
    - Hash house
 
    - Greasy spoon, e.g.
 
    - Refurbished railroad car, maybe
 
    - Converted caboose, maybe
 
    - Truck stop
 
    - Place where the orders in this puzzle are taken
 
    - Eatery traditionally modeled after a rail car
 
    - In the comic strip "Blondie," Lou's is one
 
    - Inexpensive restaurant
 
    - Subject of Edward Hopper's "Nighthawks"
 
    - Roadside sign
 
    - Casual eatery
 
    - Hash server
 
    - Roadside eatery
 
    - Dagwood server
 
    - 1982 Barry Levinson film
 
    - Informal restaurant
 
    - Informal eatery
 
    - Type of car
 
    - Where Alice worked
 
    - Oblong eatery
 
    - Burger stop
 
    - Place for a short-order cook
 
    - Where Flo worked for Mel
 
    - Amtrak car
 
    - Where hash is "slung"
 
    - Alice's workplace
 
    - Restaurant patron
 
    - Roadside restaurant
 
    - One giving an order
 
    - Site for a bite
 
    - Eatery that's the setting for the Hopper painting "Nighthawks"
 
    - Place to get eats
 
    - Luncheonette
 
    - Comfort-food source
 
    - Comfy eatery
 
    - Comfort food source
 
    - Barry Levinson movie
 
    - Greasy spoon
 
    - 'Nighthawks' setting
 
    - 1982 Barry Levinson movie
 
    - Neighborhood eatery
 
    - "Can I get ya more coffee, hon?" joint
 
    - Eatery with its own lingo
 
    - Restaurant that serves grits for grub
 
    - Building with many sides
 
    - Alice's restaurant
 
    - Where hash is slung
 
    - Beanery
 
    - Train restaurant
 
    - Place likely to serve breakfast all day
 
    - "2 Broke Girls" setting
 
    - Luncheonette kin
 
    - Thanksgiving guest
 
    - Local eatery
 
    - Establishment with booths
 
    - Restaurant visitor
 
    - 24-hour eatery, often
 
    - Casual restaurant
 
    - 1982 coming-of-age movie
 
    - Where a "cluck and grunt" might be ordered
 
    - Place for a BLT
 
    - Blue plate special spot
 
    - Eatery often named for its owner
 
    - Restaurant, or its patron
 
    - Where to get a 48-Across
 
    - Nostalgic film of 1982
 
    - Roadside stop
 
    - Where to get a club sandwich
 
    - Home fries server
 
    - One may have '50s decor
 
    - One eating at a restaurant
 
    - Bistro patron
 
    - Purveyor of hash browns
 
    - Place to get a milkshake
 
    - Place with daily specials
 
    - Person eating at a restaurant
 
    - Certain train car
 
    - Where a "houseboat" is a banana split
 
    - Scene in Edward Hopper's "Nighthawks"
 
    - Eatery with booths
 
    - Locale known for its slang
 
    - Eatery that might be open 24 hours a day
 
    - Eatery seen in the painting "Nighthawks"