/ wɒg; NAmE wɑːg/ noun
1.
( BrE , taboo , slang ) a very offensive word for a person who does not have white skin
2.
( AustralE , taboo , slang ) an offensive word for a person from southern Europe or whose parents came from southern Europe
3.
( AustralE , informal ) an illness, usually one that is not very serious :
A flu wog struck.
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WORD ORIGIN
sense 1 1920s: of unknown origin.
sense 2 1930s: of unknown origin.