Definition of Irish guard in US English:

Irish guard

noun

  • 1In the 17th and 18th cent.: a squadron of the British Navy with responsibility for patrolling the Irish Sea. Now historical.

  • 2In plural, with capital initials. An infantry regiment of the British Army formed in 1900 during the Boer War (1899–1902). Also in singular: a member of this regiment.

Origin

Mid 17th century (in an earlier sense). From Irish + guard.

Pronunciation

Irish guard

/ˌʌɪrɪʃ ˈɡɑːd/