Related Clues:

• Phone button label
• Letters accompanying a zero
• 0 letters
• Letters on a phone
• 0 on a phone
• Letters near ''0''
• Abbr. on a phone
• Phone co. helper
• 0 neighbor
• Phone letters near 0
• Keypad abbr.
• It's to the left of #
• Abbr. paired with zero
• Phone button abbr.
• Abbr. to the right of a star