present participle of tree

A tree-like pattern or formation.

That is driving something or someone up a tree.

a tall perennial woody plant with a trunk and branches

(video games) A hierarchical visual representation of customizations a player can make to their character. Skill trees can either branch out or eventually fold back to a single point depending on the game. Typically some form of skill point is used as opposed to spending experience points.

(computing theory) A tree (data structure) set up to facilitate searching.

plural of cherry tree

plural of pear tree

(video games) A hierarchical representation of technology that may be researched and implemented for the whole faction by the player, most often in real-time strategy games.

(topology) A set that is the union of subsets (called segments), each of which is totally ordered, such that the segments fit together a certain way.