Definition from Wiktionary, the free dictionary
midchest (plural not attested)
- The middle of the chest.
2007 July 17, John M. Broder, “Filling Gaps in Iraq, Then Finding a Void at Home”, in New York Times:
- Today, Mrs. Khan shares a room in a dreary nursing home on the fringes of Houston, paralyzed from midchest down and tormented by a fateful choice to try to remake her life.