Related Clues:

• Socially dominant
• 747 flier
• First game of a doubleheader
• Highest-ranking, in some hierarchies
• Curtain raiser
• Airline employee
• Kind of radioactive particle
• One who says 'one club,' e.g.
• Bet start?
• Cockpit worker
• ___ light
• Flyboy
• Cockpit occupant
• First in a series
• ___ male (top dog)