Related Clues:

• Speller's phrase
• 'Q ___ queen'
• 'That is...'
• 'In other words...'
• See 49-Down
• 'Er...um...'
• Latin clarification
• Alphabet book phrase
• Phrase of explanation
• Words of explanation in spelling
• To wit: Lat.
• Z ___ zebra
• Strictly speaking
• Namely
• Stammerer's phrase