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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Big opening:

MAW: Big opening
MEGA: Big opening?
PREOP: Before one's big opening?
MARKETBELL: Big Board opener and closer
STORESIGNS: COME IN, WE'RE OPEN and "BIG SALE TODAY"
CONEYISLAND: Its Big Apple boardwalk opened in 1923