(Used especially by Jews) a gentile girl or woman:he’s got a big blonde on his arm - a shiksa no less[as modifier]:your sister has a classic shiksa face...
Incidentally, what is it about people who go on about being ‘shiksas’ and ‘goys’?
She even converted to Judaism, calling herself ‘the Jewish shiksa.’
It's not every day that you say yourself: ‘I can't believe she's not a shiksa.’
Origin
Late 19th century: from Yiddish shikse, from Hebrew šiqṣāh (from šeqeṣ 'detested thing' + the feminine suffix -āh).