From Middle English torplen, of obscure origin. Compare torfel and topple.
torple (third-person singular simple present torples, present participle torpling, simple past and past participle torpled)
- (intransitive, rare or obsolete) To fall headlong; topple
2012, Steven Erikson, The Devil Delivered and Other Tales:
The grille flew open as it torpled backwards, and the fire o' love shot out in all directions, pouring out sparks as the stove rolled across the rock and plumged [sic] over the far side.