The term 'clears a trail' can be solved by two crossword solutions: 'hacks' (5 letters) and 'blazes' (6 letters). Hacking is the process of cutting down trees and other vegetation to create a path or trail. This is usually done with an axe or machete. Blazing is the process of marking a trail with signs, such as paint or flags, so that it can be easily followed. Both of these processes are used to clear a trail for hikers, bikers, and other outdoor enthusiasts.