Vert n. : Everything that grows, and bears a green leaf, within the forest; as, to preserve vert and venison is the duty of the verderer.

Vert n. : The right or privilege of cutting growing wood.

Vert n. : The color green, represented in a drawing or engraving by parallel lines sloping downward toward the right.

Example:
How can I increase my Vert in the shortest time?

Taxonomy
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Defination from the web: