Related Clues:

• Fortify
• Strengthen
• Increase
• Strengthen, as security
• Add muscle
• Make firmer
• Make stronger
• Add muscle to
• Strengthen with cow meat?
• Add numbers to, say
• Joint possibly in revolt: you need to get reinforcements
• Reinforce rise in price of steak
• Number of letters from giant ape
• Put weight on bar Bill carried over
• Number, as a book