pego🔊nounUK /ˈpiːɡəʊ/Etymology Uncertain.1Archaic, Slang The penis.Lately, he has come to dread Sugarʼs overtures of love, for his pego has remained flaccid when he would most wish to have use of it.2002, Michel Faber, The Crimson Petal and the White, Canongate Books (2010), page 758: