have auxiliary verb Meaning in the Cambridge Learner’s Dictionary
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Meaning of “have” - Learner’s Dictionary

have

auxiliary verb
 
 
strong /hæv/ weak /həv, əv, v/ ( past tense and past participle had, present tense singular has)
A2 used with the past participle of another verb to form the present and past perfect tenses: Have you seen Roz? I've passed my test. He hasn't visited London before. It would have been better to tell the truth. He's been working in France for two years now. I had met his wife before.
(Definition of have auxiliary verb from the Cambridge Learner’s Dictionary © Cambridge University Press)