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

Crossword clues for Pearl, perhaps:

TEARDROP: Pearl, perhaps
DIVER: One looking for pearls, perhaps
DIVED: Sought pearls, perhaps
CLAM: Pearl container, perhaps
OYSTER: Pearl harborer, perhaps
ADAGE: Pearl of wisdom, perhaps