rima

noun3

1. •
   A cleft or gap between two symmetrical parts, particularly between the vocal folds.
2. •
   A crack or fissure on a lunar or planetary surface; a rille.

   • Look for three prominent interior craters, as well as an ancient rima falling near the shadow's edge. — 2006
3. •
   An Icelandic epic poem written with rhyme, alliteration, and certain metres.

noun1

1. •
   Initialism of reversible inhibitor of monoamine oxidase type A.