Definition of lay on phrasal verb from the Oxford Advanced Learner's Dictionary

 

lay on

 phrasal verb
phrasal verb
 
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Phrasal Verbs
(British English, informal) to provide something for somebody, especially food or entertainment to lay on food and drink A bus has been laid on to take guests to the airport.

lay something on somebody

 
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(informal) to make somebody have to deal with something unpleasant or difficult Stop laying a guilt trip on me (= making me feel guilty).
See the Oxford Advanced American Dictionary entry: lay on