1. (

• harbor ,
• harbour

) secretly shelter (as of fugitives or criminals) ;

2. (

• harbor ,
• harbour

) keep in one's possession; of animals ;

3. (

• harbor ,
• harbour ,
• shield

) hold back a thought or feeling about; "She is harboring a grudge against him" ;

4. (

• harbor ,
• harbour ,
• hold ,
• entertain ,
• nurse

) maintain (a theory, thoughts, or feelings); "bear a grudge"; "entertain interesting notions"; "harbor a resentment" ;