Onocrotalus, onociótali penult. corr Plin. A birde like to a swann which putting his head into the water brayeth like an asse.Onomatopeia.A figure whereby a worde is made vpon a certaine sounde or nose asing of an adder.Ononium. Vide ANONIVM.
Lewis and Short: Latin dictionary
ŏnōcrŏtălus, i, m., = o)nokro/talos, the pelican, Plin. 10, 47, 66, 131; Mart. 11, 21, 10; Vulg. Lev. 11, 18; id. Deut. 14, 18.