See 6-Across

PINE

Think of a tall evergreen tree that’s often used for lumber or holiday decorations.

This clue is a "see" reference, meaning the answer for 6-Across directly gives you the solution here. Since 6-Across is likely something like "Tree with needles," the answer "PINE" fits perfectly. These clues are common in crosswords to connect related answers without repeating the same hint.