Related Clues:

• 108 Across part
• Instruction book item
• Booster, to a rocket
• ''___ this way!''
• Actors' surface
• Dance feature
• Old West transport
• Rocket section
• It may lead up or down
• Way down
• It's part of the flight
• Play grounds?
• Wheelchair obstacle
• With 72-Across, vaudevillian 40-Across
• Thumbsucking, e.g.