What is the meaning of Heckle?

To question harshly in an attempt to find or reveal weaknesses.

To insult, tease, make fun of or badger, especially during a comedy performance.

To prepare flax for spinning using special combs called hackles

Alternative form of hackle (tool for separating flax)

The long shining feathers on a cock's neck.

A feather ornament in the full-dress bonnets of Highland regiments.

An interruption during a show, especially a comedy performance

Source: wiktionary.org