Clue: Actor touches rear briefly by statue (3,6)
Answer: THE SPHINX
Explanation: Definition: statue
 THESP(informal term for "thespian", an actor) **plus**(touches) "hind"(the rear/posterior, of a, say, a person) **minus ****its last letter**(briefly) + X(symbol for the multiplication process/by as in "2 by 2 =4")