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Hard dark stone crushed into small pieces used in surfacing roads, for ballast in railway tracks, etc.; gravel; blue metal.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
broken rock used for repairing or making roads
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: rock, stone
No etymology was provided for this word.