GALLOWGLASS Meaning of GALLOWGLASS in English [gal.low.glass] n [alter. of Ir galloglach, fr. gall foreigner + oglach young man, warrior] (ca. 1515) 1: a mercenary or retainer of an Irish chief 2: an armed Irish foot soldier Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012