M'-Naught /(mak*na̤t")/

M'-Naught

v. t.
  1. To increase the power of (a single-cylinder beam engine) by adding a small high-pressure cylinder with a piston acting on the beam between the center and the flywheel end, using high-pressure steam and working as a compound engine, -- a plan introduced by M'Naught, a Scottish engineer, in 1845. (Steam Engines)