Meaning of “owner” - Learner’s Dictionary

owner

noun [ C ] us uk /əʊnər/
The wallet was returned to its rightful owner.Please may I speak to the owner of the property.The owners of the house were found bound and gagged in the cellar.Please refer to your owner's manual for more information.The painting was restored to its rightful owner.

B1 someone who legally owns something:

a property owner
ownership noun [ U ]

the right of owning something

(Definition of “owner” from the Cambridge Learner’s Dictionary © Cambridge University Press)