Definitions for "Conundrum"
A kind of riddle based upon some fanciful or fantastic resemblance between things quite unlike; a puzzling question, of which the answer is or involves a pun.
A question to which only a conjectural answer can be made.
a puzzle, a riddle, a mystery, a question
Conundrum is an original novel written by Steve Lyons and based on the long-running British science fiction television series Doctor Who. It features the Seventh Doctor, Ace and Bernice. A prelude to the novel, also penned by Lyons, appeared in Doctor Who Magazine #208.
Conundrum is a Dragonlance fantasy novel by Jeff Crook.
Crystalline reeds, strands or shards; the shattered physical form of the Sanguinary.
Keywords:  trek, february, episode, fifth, season
"Conundrum" is the title of a Star Trek: The Next Generation episode, from the fifth season. Its production number is 214, and it first aired on 17 February, 1992.
a difficult problem
(noun) An intricate and difficult problem.