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Phrase(s): (Could I) get you something (to drink)?
an expression offering a drink, usually an alcoholic drink. (Compare this with (Could I) buy you a drink? Also used with can or may in place of could.) • Bill: Hi, Alice! Come on in! Can I get you something to drink? Alice: Just a little soda, if you don’t mind. • Waiter: Get you something to drink? John: No, thanks. I’ll just order dinner now.
McGrawhill's American Idioms And Phrasal Verbs