Bastard wing

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} (Zo["o]l.), three to five quill feathers on a small joint corresponding to the thumb in some mammalia; the alula. [1913 Webster]