drop-down.
1. adj. That can be deployed (? expand). Drop-down metal door.
2. adj. said of an illustration in a book or a magazine: found folded inside. A drop-down map. U t. c. s. m. this month the magazine brings a drop-down.
3. adj. Inform. He said the box that shows on the screen all the options you can choose.
4. m. brochure or informational program that must be made to read it.
