Of a person, taking their work seriously and doing it well and rapidly.
headworking
kinetograph
kinetograph
noun
(dated) A camera for making chronophotographs.
(dated) A machine for projecting chronophotographs upon a screen for the purpose of producing the effect of an animated picture, sometimes with an accompanying soundtrack.
nightwalker
nightwalker
noun
(archaic, euphemistic) A prostitute who looks for clients on the streets.