Of the color between blue and yellow in the spectrum; colored like grass or emeralds. Covered with grass, trees, or other plants. (of a plant or fruit) young or unripe. (of the complexion or a person) pale and sickly-looking. Green color or pigment. A green thing, in particular. A piece of public or common grassy land, especially in the center of a town. Green leafy vegetables. A member or supporter of an environmentalist group or party. Make or become green, in particular.