The story
The beam-engine technique was introduced by Mr M'Naught, a Scottish engineer, in 1845.
Etymology from Wiktionary, CC BY-SA 4.0.
M'Naught
Today it means: 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 centre and the flywheel end, using high-pressure steam and working as a compound engine. Full definition →