Question

In leaves no step had trodden black robert frost what does it mean

Answer 1

This sentence is to describe how less frequently the path was traveled. "No steps had trodden black" as in no one has walked in this path, so there were no foot prints.
 

Answer 2

Answer:

The leaves had not change their colour and turned black because of less people stepping on them. It could represent a path one may have never taken in life, for the fear uncertainly.