Related Clues:

• Bovine call
• Angus beef?
• Sound at McDonald's farm
• Herd noise
• 'Why, yes, I am, in fact, a cow'
• Hereford utterance
• It can be a stock reply
• Guernsey noise?
• Low state of mind duke’s shaken off
• Sound on MacDonald's farm
• Elsie's comment
• Word from Elsie
• Sound from 17-Across
• Sound from a cow
• Word from a cow