Mine Enemy is growing old — Toothache

Dickinson compared her enemy, the one who was her palate and pain, with her toothache. She starved herself to cure it, and had the last revenge.

Mine Enemy is growing old－1
I have at last Revenge－
The Palate of the Hate departs－
If any would avenge

Let him be quick－the Viand flits－5
It is a faded Meat－
Anger as soon as fed is dead－
'Tis starving makes it fat－
(F.1539/J.1509)
[1] Mine Enemy:: her toothache, a tormentor. old:: ripe, matured.
[3] Palate:: the roof of the mouth (OED 1).
[2-3] Revenge, departs:: the sore in her palate she hated would leave her at last as her revenge.
[4] any would avenge:: anyone who would like to avenge.
[5] quick:: sensitive flesh. Let, Viant flits:: let the new growing flesh away from food.
[6] faded Meat:: decaying flesh.
[7] Anger:: inflammatory state of any part of the body (OED 3).
[8] makes it fat:: the starving does good to the new flesh.

She saw that her son, in seeking to tickle his palate with something nice, had pretty sharply burned his mouth and throat with a liberal dose of a tolerably hot mixture, intended to mollify that tormentor of the mouth, called toothache. ─ Dick Duncan: The Story of a Boy who Loved Mischief (1865)