Definition of own verb from the Oxford Advanced American Dictionary

Oxford3000

own

verb
/oʊn/
 
 
(not used in the progressive tenses)1 [transitive] own something to have something that belongs to you, especially because you have bought itDo you own your house or do you rent it?I don't own anything of any value.Most of the apartments are privately owned.an American-owned companyDoes anyone own this coat? It was left in a classroom.Don't tell me what to do—you don't own me!2 [intransitive, transitive] (old-fashioned) to admit that something is true own to something/to doing somethingHe owned to a feeling of guilt. own (that)…She owned (that) she had been present.IDIOM

behave/act as if you own the place

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think you own the place

(disapproving) to behave in a very confident way that annoys other people, for example by telling them what to dobehave as if you own the placeact as if you own the place
PHRASAL VERB

own up (to something/to doing something)

to admit that you are responsible for something bad or wrong synonym confessI'm still waiting for someone to own up to the breakages.Why don't you just own up and hope she forgives you?own upown up to doingown upown up to to doing