Related Clues:

• Service center
• First of a vowel fivesome?
• 22nd letter of the alphabet
• Bobby who sang 'Take Good Care of My Baby'
• Notch's shape
• Shape of a notch
• Dove's sign
• Hum attachment?
• Flock formation
• Third of November?
• Ex halved
• Letter for a gaggle
• Two-finger gesture
• Geese can form it
• Geese form one