saboteur

a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal n

n a rester who is sleeping n a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal n an unexpected achiever of success n one of the cross braces that support the rails on a railway track n a passenger car that has berths for sleeping n pajamas with feet