Related Clues:

• Rip or neap
• Destroyer of some castles
• It can turn on you
• In and out of the sea
• An odd diet for the festive season
• Fluctuation in main water supply
• Ocean phase
• A great sea-power
• Ebb and flow restricted, we hear
• Period of time may be spring - but not winter
• Utterly bound by its rise and fall
• It does twice-daily turns at coastal resorts
• Ebb and flow
• The flow of brilliant ideas?
• Flow of the sea