TITLE: Helix with a helix as its axis
QUESTION [39 upvotes]: Does anyone know if there is a name for the curve which is a helix, which itself has a helical axis? I tried to draw what I mean:

REPLY [22 votes]: I don't believe there is a standard term. Nevertheless, MathWorld calls the resulting curve a "slinky".

Of course, one can have a "slinky" of a "slinky":