arista

noun2

1. •
   One of the fibrils found on grains or fishes.

   • A very distinct species. Habit of Brachystephium scapigerum D. C.: but that ought to have no aristae to the achenium: here the awns are very stout in proportion to the size of the capitulum. — 1848
2. •
   A bristle on the third segment of a fly's antenna.