John le Carre wrote fiction espionage novels. Espionage novels are novels which focus on a spy's life or spying in general. His most famous work is The Spy That Came In from the Cold.
The definition of a ditz is slang for someone who is silly or who seems to have scattered thinking. An example of ditz is a silly dumb person who just giggles all day. ditz. Slang a person thought of as being flighty, eccentric, silly, etc. ditz.
hertz noun [U]. âº physics the âstandard âunit for âmeasuring the âfrequency (= the ârate of ârepetition) of a wave. One hertz âequals one ârepetition âper second. (Definition of hertz from the Cambridge Academic Content Dictionary Â© Cambridge University Press).