Projects using English for University’s courses (4)
I believe the answer is:
jets
'courses' is the definition.
(jetting is a kind of coursing)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for jets that I've seen before include "Rapid streams of liquid or gas" , "Water spouts or fast planes" , "Aeroplanes - Sharks rivals in "West Side Story"" , "Fast airplanes" .)