From The Collaborative International Dictionary of English v.0.48:
Quob \Quob\ (kw[o^]b), v. i. [Cf. Quaver.] [Written also
quop and quab.]
To throb; to quiver. [Local & Vulgar]
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Quab \Quab\, n. [Cf. D. kwab eelpout, Dan. quabbe, G. quabbe,
quappe, LG. quabbe a fat lump of flesh, and L. capito a kind
of fish with a large head, fr. caput the head, also E.
squab.]
An unfledged bird; hence, something immature or unfinished.
--Ford.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Quab \Quab\, v. i.
See Quob, v. i.
[1913 Webster]