I was almost done in by 3D — what could possibly begin and end with those letters? Giving in, I even searched a word database that provided only two words, neither of which was even close.
Finally out of the blue the answer hit me. What a tough clue! I doubt I've ever seen or heard that word before, but it had to be right.
[C. Asian beatniks bizarrely getting into action-film staple (11)]