Magnum and Ellery Queen: Abbr

• Letters on some college buildings
• Some tails, for short
• Hippocrates's consonant pair, to Hippocrates
• Gumshoes: Abbr
• Brief case handlers?
• Magnum and others: Abbr.
• Thomas Magnum and his peers: Abbr
• Mathematical constants
• They're marked on some math tests

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