Answer:

puzzle

Answer	Crossword Clue
PUZZLE	Something unexplained
PUZZLE	Rebus, e.g.
PUZZLE	Flummox

PUZZLE	This is one
PUZZLE	Bewilder
PUZZLE	You're doing one
PUZZLE	Your current occupation?

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.