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Meaning of blue Billy | Babel Free

Noun CEFR B2

Definitions

The refuse ammoniacal lime from gas factories.

UK, obsolete, slang, uncountable

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

blue blanket blue blazes blue bloater blue blood blue blossom Blue Bomber