Mc|Coy

Mc|Coy «muh KOY», noun.

U.S. Informal. Usually, the real McCoy. the genuine article; the real thing: »

You can't fake this cigar; it's the real McCoy.

╂[American English < the Scottish phrase the real Mackay, probably < Mackay, a Scotch whisky exported to the U.S. and Canada by A. and M. Mackay of Glasgow; influenced by Kid McCoy, a celebrated boxer of the late 1800's, who was sometimes confused with another, less popular boxer called McCoy]