Related Clues:

• Winter protection
• Exercise, as wings
• Airplane wing part
• Wing movement
• Do a chicken dance move
• Winter headgear feature
• Bit of winter protection
• What bird wings do
• Part of an envelope
• Pajamas' rear opening
• Flag sound
• Opening in some pajamas, once
• Envelope closure
• Do it with wings
• Move like a bird or get into a tizzy