raise a hand against (one)
To punch or slap someone, or threaten to do so. It's a pathetic, cowardly man who would raise a hand against his own child. Times have changed, and teachers never raise a hand against their students anymore.
raise a hand
(against someone or something) Go to lift a hand (against someone or something).
raise a hand against
Also, lift one's hand against. Threaten to hit or actually hit, as in She's never raised a hand against the children. [First half of 1500s]