a heavily armed mercenary soldier, originally Hebridean (Gaelic-Norse), maintained by Irish and some other Celtic chiefs from about 1235 to the 16th century
Word origin
C16: from Irish Gaelic gallóglach, from gall foreigner + óglach, young warrior-servant, from og young + -lach a noun suffix
galloglass in American English
(ˈgæloʊˌglæs)
noun
an armed follower of any of the old Irish chieftains
Word origin
Ir gallōglach, servant, soldier < gall, foreigner + ōglach, a youth, servant, soldier < OIr ōac, young