Related Clues:

• Swift tale, although it's back to front
• By the sound of it, see 17 down for this
• Although it may be overturned, it will hold water
• Although it's overturned it will hold water
• That a swift tale!
• Swift tale of this, although it turns up here
• One might have a century over 17 down for this
• That should hold water, even although it's overturned
• Might C, get to ask for such a lot of drink?
• 'E's got about one kilogram for this container
• Might C ask for potassium, for instance?
• Swift tale, although backward
• Might potassium, for instance, come by the barrel?
• Although it's going the wrong way, thereby hangs a swift tale
• Although it's been overturned it will hold water