We found one dictionary that defines the word further down:

Phrases: Further Down the Spiral, further down the line, go further down, more... ▸ Words similar to further down ▸ Usage examples for further down ▸ Idioms related to further down ▸ Wikipedia articles (New!) ▸ Words that often appear near further down ▸ Rhymes of further down ▸ Invented words related to further down