TV's Magnum and the like

• Magnum and others: Abbr.
• Rho preceders
• Many crime fiction protagonists, briefly
• Symbols in some area formulas
• Circle figures
• Tecs
• Detectives, for short
• Some tails, for short
• TV's Magnum and Rockford, for two

Wiktionary Word definitions in Wiktionary
n. (plural of pi English)