aveu aviava

avī,  s. the grating noise of any thing; a thing that shrinks, or slips off when laid hold on. [Dav : 1541]
avī,  a. creaking. [Dav : 1542]
avī,  v.a. to grind the teeth; to show the teeth as one dog to another; see feu. [Dav : 1543]
avi,  p.n. grincer, montrer les dents. [Jau :497]