noun
Meaning 1
An ordinary member of the public who intervenes, often at personal risk, to stop a troublemaker, hooligan or ne'er-do-well in the act of committing a crime.
Definition source: English Wiktionary via Wiktextract
Usage: UK, informal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided