from The Century Dictionary.
- noun A corruption of atomy.
Sorry, no etymologies found.
Tim did a similar song-otomy a bit later when he realized that even in the solitude of the car it would still sing.
"Ay, you may well ask whether that old dried-up _otomy_, who ought to grin in a glass case for folks to stare at, be kith and kin of such a bang-up cove as your fancy man, Luke," said Turpin, laughing -- "but i 'faith he is."