'Villus' definitions:

Definition of 'villus'

From: WordNet
noun
A minute hairlike projection on mucous membrane

Definition of 'Villus'

From: GCIDE
  • Villus \Vil"lus\, n.; pl. Villi. [L., shaggy hair, a tuft of hair.]
  • 1. (Anat.) One of the minute papillary processes on certain vascular membranes; a villosity; as, villi cover the lining of the small intestines of many animals and serve to increase the absorbing surface. [1913 Webster]
  • 2. pl. (Bot.) Fine hairs on plants, resembling the pile of velvet. [1913 Webster]