1. noun, slang Paper money, especially in large amounts. Boy, I bet you had to lay down some serious green for that new sports car, huh? How much green is this repair job gonna cost me? Now, don't go shelling out all your green at once just because you've gotten your first paycheck.

2. noun, slang Marijuana, especially that which is inexpensive or of low quality. Dude, I scored some green for the concert!

3. adjective Inexperienced. The new interns are pretty green, but I think they're going to be quick learners.

4. adjective Naïve. The city is full of people ready to take advantage of all the green newcomers that arrive every day.

5. adjective Environmentally conscious or designed not to have an adverse impact on the environment. The new student center was designed with green building principles. This year, our department is trying to focus on all the ways we can be more green.