Definition of "Irishman"

It is so absurd to advance into the presence of savage royalty after the fashion of an Irishman driving a pig to market, for that is what we looked like, and the idea nearly made me burst out laughing then and there.

1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887