The most common and most likely answer to this crossword clue is the 6 letter word FOREST
F
O
R
E
S
T
More clues leading to the result FOREST
- Wood and minerals wrapped in newspaper
- Adapted to established woodland
- Source of maston behalf of English saint
- Warning by way into woods
- Football team favouring set plays
- Warning! Play for time when removing all trees
- Wood gathering: men getting stuck in
- Wooden feature seen in wharf or estuary
- Warning shouts at the first from Tiger Woods
- Starts to follow then support Nottingham?
Buddy explains!

The straight part
We know that "trees" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case trees = forest.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FOREST mean?
FOREST noun- A dense uncultivated tract of trees and undergrowth, larger than woods.
- Any dense collection or amount.
- A defined area of land set aside in England as royal hunting ground or for other privileged use; all such areas.
- A graph with no cycles; i.e., a graph made up of trees.
- A group of domains that are managed as a unit.
- The colour forest green.
- To cover an area with trees.