Related Clues:

• Prohibited by religion or custom
• By religion or custom, not to be done or touched
• Not allowed, forbidden, proscribed
• A ban or prohibition of superstitious kind
• Not to be touched or used, banned for religious reasons
• Prohibited by social custom
• It's forbidden to have a broken boat with nothing in it
• With 30- and 53-Down, 1964 Beach Boys hit
• Nail-biting, e.g
• Under a ban
• Deed not to be done
• Many a fetish
• A warning not to put on the tea, so to speak (3'1)
• "Cease and desist"
• Maligning 2-Down, in some places