Possible Clues:

• With six equal faces
• Solid youngster in charge
• Of three dimensions
• (Equation) with third power
• Like bones bishop and I buried in church, oddly
• Youngster in charge, not 'rounded' in any way?
• Like dice, shape-wise
• Of the third power (mathematically)
• (Of a solid) square-sided
• Young fox nearly frozen and like to die?