'Tiercel' definitions:

Definition of 'tiercel'

From: WordNet
noun
Male hawk especially male peregrine or gyrfalcon [syn: tiercel, tercel, tercelet]

Definition of 'Tiercel'

From: GCIDE
  • Tiercel \Tier"cel\, Tiercelet \Tierce"let\, n. [OE. tercel, tercelet, F. tiercelet, a dim. of (assumed) tiercel, or LL. tertiolus, dim. fr. L. tertius the third; -- so called, according to some, because every third bird in the nest is a male, or, according to others, because the male is the third part less than female. Cf. Tercel.] (Falconry) The male of various falcons, esp. of the peregrine; also, the male of the goshawk. --Encyc. Brit. [1913 Webster]