in ornithology. See Falco.

in heraldry, is accounted one of the most noble bearings in armoury, and, according to the learned in this science, ought to be given to none but such as greatly excel in the virtues of generosity and courage, or for having done singular services to their sovereigns; in which cases they may be allowed a whole eagle, or an eagle naiant, or only the head or other parts thereof, as may be most agreeable to their exploits.

in astronomy. Vol. I. p. 487.