Related Clues:

• Much-guarded idea or institution, like Hindu bovine
• Hallowed bovine in India or revered institution
• Perhaps it's what the minstrel boy has girded on that is sure to get him through
• Does it ruddy udder, perhaps, make it sound wholly beastly?
• Back in the plant, cutting in the hand, all for getting one through
• It's not the French weapon that will get you in
• Papal bull's counterpart that's beyond criticism
• A higher lower?
• Executed agitator keeping revolutionary Western idol
• CE cowards put out doctrine of all-male clergy, say
• Counterpart of a papal bull that's above criticism?
• Person/custom unreasonably beyond criticism
• Shibboleth - secret phrase to gain admission
• ID (to access computer)
• Person, custom, etc unreasonably held to be beyond criticism