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

Crossword clues for Trevi toss-in, once 4 letters:

COIN: Trevi toss-in
LIRA: Old Trevi toss-in
LIRA: Trevi toss-in
LIRA: Trevi toss-in, once