twisty

Short definition from Wiktionary

Adjective

1. 1
   Characterised by a twist or twists; twisting.

Noun

1. 1
   Something that is twisty, such as a road
2. 2
   A strand of hair twisted together in a braid-like fashion
3. 3
   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.