Traditional Meanings:

European (Judeo-Christian)

• Luck if see – In the dream you see or meet a knacker this promises happiness in your life;
• Damage if talk – You are talking with a knacker in your dream this announces harm in your life.

Arabian (Islamic)

• Joy if see working – In the dream you see one is working, this promise happiness;
• Good omen if speak with one – The dream marks good hope related with your enterprises, which will bring good earnings;
• Frustration if see one driving – You see a knacker is driving somewhere, signifies that your hopes and wishes will not come true.

* Please, see meaning of dog catcher.