A pulldown menu is similar to a dropdown menu but you need to hold the button down to keep the menu open.
A list of options that "pulls down" when you select a menu at the top of a window. For example, the File menu in most programs is a pulldown menu that reveals commands such as open, new, and save.
is a menu that is "rolled" with a button in some of its corners. When you press that button, the menu "unrolls" itself, showing you the full menu.