1. 7 Forked lightning flickered across the sky.

2. 28 Fractals are used in the study of things like forked lightning and to produce some types of computer graphics.

3. Biramous - resembling a fork; divided or separated into two branches; "the Biramous appendages of an arthropod"; "long branched hairs on its legson which pollen collects"; "a forked river"; "a forked tail"; "forked lightning"; "horseradish grown in poor soil may develop prongy roots".

4. Biramous - resembling a fork; divided or separated into two branches; "the Biramous appendages of an arthropod"; "long branched hairs on its legson which pollen collects"; "a forked river"; "a forked tail"; "forked lightning"; "horseradish grown in poor soil may develop prongy roots".