The Collaborative International Dictionary
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.
Wiktionary
n. (alternative form of tercelet English)
Wikipedia
''' Tiercelet ''' ( Luxembourgish: Däitsch-Lahr and Lahr) is a commune in the Meurthe-et-Moselle department in north-eastern France.
Usage examples of "tiercelet".
The descendants of those tiercelets are even now known in France under those names.