secret intelligence service: the government agency in the United Kingdom that is responsible for internal security and counterintelligence overseas
abstraction: a general concept formed by extracting common features from specific examples
plantar reflex: flexion of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front in persons over the age of 2 years; under 2 years the results should be extension of the toes (Babinski reflex)