Related Clues:

• Ten pins with two balls
• Its symbol is 'X'
• Bowler's conversion
• ___ tire (flabby middle)
• It's second to a strike
• Success on a second attempt, of a sort
• Flat answer?
• Two-ball feat
• Ump's call, in baseball
• Converted split
• Show leniency toward
• Hit at a trade dispute
• An industrial dispute, pickets out
• Lean and treat mercifully
• Three gains illustrated by conjurer with headgear