Related Clues:

• Missing link
• Obvious space
• Gender ___
• L. L. Bean competitor
• Adjust, as a spark plug
• Alfred E. Neuman's smile feature
• Mountain-ridge feature
• Generational divide
• Gap competitor
• Gender problem?
• Popular clothing chain
• Space between the teeth, e.g.
• Cleft
• Obstacle in father-son relations
• Rift