Related Clues:

• It may need air
• You can get this in bars
• Grow weary
• The fifth is spare
• Bathday cake
• It can wear down from too much travel
• Rock's companion
• Bathtub item
• Die cast?
• Cake made for a shower
• Bubble material
• It's seen in bars
• Word with bubble or opera
• 40 quarters, e.g.
• Cake composition