twisty

Etymology

twist + -y

adj

1. Characterised by a twist or twists; twisting.
   lost in a twisty labyrinth

noun

1. Something that is twisty, such as a road
   On lonely twisties in upstate New York, the driver of a Porsche Boxster S surely found my unshakable Mini anything but cute. March 18, 2007, Lawrence Ulrich, “There’s More Than Meets the Eye”, in New York Times
2. A strand of hair twisted together in a braid-like fashion
   I was introduced to the panorama of twisties, barrettes, hair and scalp conditioner (basically hair grease), brushes for every occasion and narrow- and wide-tooth combs. March 22, 2007, Randal C. Archibold, “I Have Taken on My Daughter’s Hair and Won”, in New York Times
3. (graphical user interface) A collapsible element having a marker such as a small triangle that rotates between horizontal and vertical positions to indicate whether the content is currently hidden or expanded.
   The document is divided up into a number of sections controlled by twisties. 1998, Steve Oliver, Pete Wood, Lotus Domino Web Site Development, page 96