Source : Webster's Revised Unabridged Dictionary (1913)

Rimose \Ri*mose"\, a. [L. rimosus, fr. rima a chink: cf. F.
   rimeux.]
   1. Full of rimes, fissures, or chinks.

   2. (Nat. Hist.) Having long and nearly parallel clefts or
      chinks, like those in the bark of trees.

Source : WordNet®

rimose
     adj : having a surface covered with a network of cracks and small
           crevices; "a tree with rimose bark"