Villus /(?)/

Vil·lus

Villus

n.

pl. Villi

  1. 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. (Anat.)
  2. Fine hairs on plants, resembling the pile of velvet. (Bot.)