Related Clues:

• Position on the roster
• Space in a schedule
• Word on some assembly instructions
• Narrow notch
• Piggy-bank part
• Gambler's opening?
• One armed bandit
• Spam container
• Outlook opening
• Worm container?
• Coin aperture .
• Tennis ball container
• One from a six-pack
• Opener's target
• Opening for coins