midriff (n.)
- abdomen
- abomasum
- barrier
- belly
- brattice
- breadbasket
- buffer
- bulkhead
- bumper
- center
- core
- craw
- crop
- cushion
- diameter
- diaphragm
- division
- embonpoint
- equator
- fender
- gizzard
- gullet
- gut
- heart
- interior
- kernel
- mat
- maw
- mean
- median
- middle
- midsection
- midst
- nucleus
- omasum
- pad
- panel
- paries
- partition
- paunch
- pot
- potbelly
- psalterium
- reticulum
- rumen
- separation
- septum
- stomach
- thick
- tummy
- underbelly
- waist
- waistline
- wall
- zone