A kind of hawk.
A male hawk. See Tercel.
A kind of hawk: a tiercel.
[Fr., L.] (Ornith.) The mature male of the peregrine falcon. The red Tarsel and red F. are the immature male and female respectively. Falco peregrinus, gen. Falco, sub-fam. Falconinae, fam. Falconidae, ord. Accipitres.