Martlet

Noun

mart=let

CIDE DICTIONARY

Martlet, n. [F. martinet. See Martin the bird, and cf. Martinet a disciplinarian.].

The European house martin. [1913 Webster]
A bird without beak or feet; -- generally assumed to represent a martin. As a mark of cadency it denotes the fourth son. [1913 Webster]

Martlet, n.
1 Heraldry an imaginary footless bird borne as a charge.
2 archaic a a swift. b a house-martin.

Etymology

F martelet alt. f. martinet dimin. f. MARTIN