Source : Webster's Revised Unabridged Dictionary (1913)

Tremella \Tre*mel"la\, n. [NL., fr. L. tremere, to tremble: cf.
   It. tremella, F. tremelle.] (Bot.)
   A genus of gelatinous fungi found in moist grounds.

Source : WordNet®

Tremella
     n : fungi with yellowish gelatinous sporophores having
         convolutions resembling those of the brain [syn: {genus
         Tremella}]