Villus
Pronunciation : Vil"lus
Part of Speech : n.;
Etymology : [L., shaggy hair, a tuft of hair.]
Definition : 1. (Anat.)
Defn: 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.
2. pl. (Bot.)
Defn: Fine hairs on plants, resembling the pile of velvet.
pl. Villi.
Source : Webster's Unabridged Dictionary, 1913