Related Clues:

• Round figure
• Carry-on item
• It's a ball
• Sphere of activity
• __ trip
• Particular specialty
• Sideless solid
• Baseball, but not football
• Help at the checkout counter
• Lunch holder
• Dog walker's need
• Bubble, e.g.
• Ditty or doggie follower
• Area of expertise, in slang
• Disco strobe, e.g.