Search Result for "rima": 
Wordnet 3.0

NOUN (1)

1. a narrow elongated opening or fissure between two symmetrical parts; 



The Collaborative International Dictionary of English v.0.48:

Rima \Ri"ma\, n.; pl. Rimae. [L.] (Anat.)
   A narrow and elongated aperture; a cleft; a fissure.
   [1913 Webster]


WordNet (r) 3.0 (2006):

rima
    n 1: a narrow elongated opening or fissure between two
         symmetrical parts