Definitions of harbour:

noun: a place of refuge and comfort and security
noun: a sheltered port where ships can take on or discharge cargo
verb: hold back a thought or feeling about
verb: keep in one's possession; of animals
verb: secretly shelter (as of fugitives or criminals)
verb: maintain (a theory, thoughts, or feelings)
name: A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #7207)