bel·ly·but·ton 
(bĕlē-bŭt′n)
(bĕlē-bŭt′n)n.
Informal
Informal
The navel; the umbilicus.
- heart disease
- hearten
- heart failure
- heartfelt
- hearth
- heart-healthy
- hear things
- hearth money
- hearthrug
- hearthstone
- heartily
- heartiness
- heartland
- heartless
- heartlessly
- heartlessness
- heart-lung machine
- heart massage
- heart of palm
- heart rate
- heart-rending
- heartrending
- Heart River
- heart-searching
- heartsease