Definition of gallows-bird:
(n) :
A wooden framework on which persons are executed by hanging.
(n) :
Any contrivance with posts and crossbeam for suspending objects.
(n) :
The main frame of a beam engine.
(n) :
(colloquial, obsolete) A wretch who deserves to be hanged.
(n) :
(colloquial, obsolete) Suspenders; braces.
(n) :
(printing, obsolete) The rest for the tympan when raised.