'Bastard wing' definitions:

Definition of 'bastard wing'

noun

Tuft of small stiff feathers on the first digit of a bird's wing [syn: bastard wing, alula, spurious wing]

From: GCIDE

Bastard \Bas"tard\, a.
1. Begotten and born out of lawful matrimony; illegitimate. See Bastard, n., note. [1913 Webster]
2. Lacking in genuineness; spurious; false; adulterate; -- applied to things which resemble those which are genuine, but are really not so. [1913 Webster]
That bastard self-love which is so vicious in itself, and productive of so many vices. --Barrow. [1913 Webster]
3. Of an unusual or irregular make or proportion; as, a bastard musket; a bastard culverin. [Obs.] [1913 Webster]
4. (Print.) Abbreviated, as the half title in a page preceding the full title page of a book. [1913 Webster]
Bastard ashlar (Arch.), stones for ashlar work, roughly squared at the quarry.
Bastard file, a file intermediate between the coarsest and the second cut.
Bastard type (Print.), type having the face of a larger or a smaller size than the body; e. g., a nonpareil face on a brevier body.
Bastard wing (Zool.), three to five quill feathers on a small joint corresponding to the thumb in some mammalia; the alula. [1913 Webster]