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

Crossword clues for Waterproof material:

PARAFFIN: Waterproofing material for paper
TAR: Waterproofing material
TARPAULIN: Waterproof material
GORETEX: Waterproofing material
SEALSKIN: Waterproof material opposed by PETA
TARPAPER: Waterproofing material
OILPAPER: Waterproof material
SATINET: Material used as a waterproofer in US Civil War uniforms
SUEDE: Material that might need waterproofing