Something put by e.g. Gents if going round the bend

• Kitty
• Fledgling gets encouraged to climb, having something to fall back on
• Savings for a rainy day
• Retirement savings
• Rainy-day insurance
• Emergency funds
• Some of it may be spent on your grandchildren
• Money for the future
• Rainy day resource

Wikipedia Word definitions in Wikipedia
NestEgg , is a line of egg-shaped chocolate candies made by Nestlé .