a British person
Origin of Pommy; from uncertain or unknown; perhaps
nounpl. pom·mies Australian & New Zealand Offensive Slang
Used as a disparaging term for a British person, especially a recent immigrant.
Origin of pommyShortening and alteration of pomegranate, Pummy Grant, alterations of Jimmy Grant, probably rhyming alteration of immigrant.
From pom +"Ž -y (“diminutive suffix"). Australian from 1912.