the false prophet with a poison (and false) prophecy, other wise known as a curse.
this one forgets that curses circle back to those who make them.
obviously a bait question.
I'd say no.
there is no evidence that gallows of the kind you imply were used in antiquity.
why don't you do a dig and find out what kind of things would have been built by a Jewish carpenter in the first century AD?
I'm guessing homes and buildings.
do a dig and get back to us.
you could also pray for insight if the question is really that important to you.
let me rephrase: I have seen mention or evidence of gallows in antiquity, though I wasn't specifically looking for it, so maybe they did have them.