Related Clues:

• With 23-Across, a guiding light
• Opposite of 'out'
• Glinda the Good's domain
• Up and at 'em
• The limit, for some
• Berlin's 'Blue ___'
• Place for planes
• Pole position?
• Word with blue or high
• Word with high or light
• Not sleeping
• Iran-contra colonel
• Cloud's place
• ''Look, up in the ---!''
• Out of the sack