gibbet

Short definition from Wiktionary

Noun

1. 1
   An upright post with a crosspiece used for execution and subsequent public display.
2. 2
   The projecting arm of a crane, from which the load is suspended.
3. 3
   A human-shaped structure made of iron bands designed to publicly display the corpse of an executed criminal.

Verb

1. 1
   To execute (someone), or display (a body), on a gibbet.
2. 2
   To expose (someone) to ridicule or scorn.