McKinley

noun2

1. •
   (slang, rare) A United States five-hundred-dollar bill.

   • Write an equation for each relevant clue. Solve by substitution. […] h. 10 Grants make a McKinley (M_c). — 1996
2. •
   (informal, historical) A processor of Intel’s first Itanium 2 brand, code-named McKinley.

   • We'll see, INTEL are playing their cards very close to their chest, but $1500 'low-end' McKinleys don't sounds like they are going to compete in any meaningful way with the P4 line to me. — 2002