'Perilymph' definitions:

Definition of 'perilymph'

From: WordNet
noun
The bodily fluid that fills the space between the bony labyrinth and the membranous labyrinth of the inner ear

Definition of 'Perilymph'

From: GCIDE
  • Perilymph \Per"i*lymph\, n. (Anat.) The fluid which surrounds the membranous labyrinth of the internal ear, and separates it from the walls of the chambers in which the labyrinth lies. [1913 Webster]