The Collaborative International Dictionary of English v.0.48:

menu \men"u\ (m[e^]n"y[=oo]), n. [F., slender, thin, minute. See
   4th Minute.]
   1. The details of a banquet; a list of the dishes served at a
      meal, whether or not one has a choice.
      [PJC]

   2. Any list of objects, activities, etc. from which to
      choose; a selection of alternatives.
      [PJC]

   3. Hence:A list of dishes form which to choose at a
      restaurant; a bill of fare.
      [1913 Webster]

   4. Hence: (Computers) A list displayed on the computer
      screen, by which a program provides the user with
      different options for processing by the program. It
      usually includes a mechanism, such as pointing by a mouse
      or selection by arrow keys, to select the desired option
      from those on the list. Depending on how the menu is
      displayed, it may be a pop-up menu or pull-down menu.
      [PJC]