heckle

Short definition from Wiktionary

Verb

1. 1
   To question harshly in an attempt to find or reveal weaknesses.
2. 2
   To insult, tease, make fun of or badger, especially during a comedy performance.
3. 3
   To prepare (flax) for spinning, using special combs called hackles.

Noun

1. 1
   Alternative form of hackle (“tool for separating flax”).
2. 2
   The long shining feathers on a cock's neck.
3. 3
   A feather ornament in the full-dress bonnets of Highland regiments.
4. 4
   An rude interruption during a show, especially a comedy performance