(Arthurian legend) one of the knights of the Round Table; friend of King Arthur until (according to some versions of the legend) he became the lover of Arthur's wife Guinevere
a member of the British order of honor; ranks below a baron but above a knight; "since he was a baronet he had to be addressed as Sir Henry Jones, Bart."
intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism