trunk

From Middle English tronke, trunke, from Old French tronc ("alms box, tree trunk, headless body"), from Latin truncus ("a stock, lopped tree trunk"), itself from truncus meaning "cut off, maimed, mutilated."

The Latin root started as an adjective describing something cut off or mutilated, then hardened into a noun for a lopped tree trunk — and along the way, in Old French, it also came to mean a headless body or even an alms box.

Trunk is a doublet of truncus and tronk, meaning all three descend from the same Latin word through different paths into English.