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Definition 2024

mirach ‎(plural mirachs)

(medicine, obsolete) The abdominal wall. [15th-17th c.]
- 1621, Robert Burton, The Anatomy of Melancholy, I.2.5.ii:
  Gordonius […] confirms as much, putting the “matter of melancholy sometimes in the stomach, liver, heart, brain, spleen, myrach, hypochondries, whenas the melancholy humour resides there, or the liver is not well cleansed from melancholy blood.”