Synonyms of navel
centreThe centre of something is the middle of it.
• A large wooden table dominates the centre of the room.
coreThe core of something such as a problem or an issue is the part of it that has to be understood or accepted before the whole thing can be understood or dealt with.
• He has the ability to get straight to the core of a problem.
eyeThe eye of a storm, tornado, or hurricane is the centre of it.
• the eye of the hurricane
Thesaurus for navel from the Collins English Thesaurus