Usually refers to the actual physical indentation or protuberance on the stomach. She decorated her navel with glitter for the beach party.
Pro Tip 2/3
Casual Conversation
Commonly used in informal settings when discussing body parts or fashion, like piercings. I'm thinking of getting a navel piercing this weekend.
Pro Tip 3/3
Avoid in Formality
Less appropriate in highly formal or professional contexts where specific medical terms are expected. The surgeon made a small incision near the patient's navel.