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

Crossword clues for Residue bit 4 letters:

DREG: Residue bit
DREG: Bit of residue
DREG: Wee bit of residue
CINDER: Bit of fireplace residue
ASH: Bit of fire residue
ASH: Bit of fireplace residue
ASH: Bit of smoking residue
ASH: Bit of hearth residue