Related Clues:

• Pi, e.g.
• 7:1, e.g.
• Price/earnings, for one
• Two to one, for one
• Festive gathering
• Brief romance
• Contact between groups
• Sine, for one
• Relative value
• Colon indication
• Quotient
• Intrigue
• Two-to-one, e.g.
• 4 to 1, e.g.
• Cosine or secant, e.g.