資料來源 : Free On-Line Dictionary of Computing

pull-down list
     
         (Or "drop-down list") A {graphical user
        interface} component that allows the user to choose one (or
        sometimes more than one) item from a list.  The current choice
        is visible in a small rectangle and when the user clicks on
        it, a list of items is revealed below it.  The user can then
        click on one of these to make it the current choice and the
        list disappears.  In some cases, by holding down a modifier
        key such as Ctrl when clicking, the selection is added to (or
        removed from) the set of current choices rather than replacing
        it.
     
        (1999-09-25)