Related Clues:

• Seed of the oak
• Eccentric person
• A mighty oak may grow from this
• A mighty oak may grow from it
• Hard fruit or informal lunatic
• Seed of an oak
• 'Almond or cashew, say (3)'
• To do wrong or be wrong
• The fruit of the shoetree?
• One might be wanting to be one
• The sort of fruit that's just on one foot
• Well, it doesn't sound this way
• How one gets noise by the yard from this little bird
• A hard case for 1 down
• The case is hard for one by a washer