Paddy has these meanings:-

• A paddy field, a field for cultivating rice or other semi-aquatic crops.
• Paddy, a slang term in British English for an Irish person. It is a diminutive of the Irish forename Pádraig, the equivalent of the English "Patrick", and although it is also in use as an ordinary forename its use as slang is now considered offensive or contemptuous by many people. Plastic Paddy is used to describe foreign nationals that harbour a nostalgic claim of 'Irishness' due to some distant relationship in their ancestral tree. See also Pejorative words and phrases; Terms of disparagement; Insult.
• Paddy Whiskey, a brand of Old Irish Whiskey manufactured by The Cork Distilleries Co. since 1779.
• Paddywagon
• In Star Wars, it is a nickname for the Jedi rank, Padawan.

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