Canal company introduces arrangement of locks (4,3)
I believe the answer is:
crew cut
'arrangement of locks' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'canal company introduces' is the wordplay.
'canal' becomes 'cut' (cut is a kind of canal).
'company' becomes 'crew' (a group of people).
'introduces' is a charade indicator (letters next to each other) (some letters come before or introduce others).
'cut' after 'crew' is 'CREW-CUT'.
Can you help me to learn more?
(Other definitions for crew cut that I've seen before include "Distressing" , "Outcome of airline economy study" , "top-level style" , "barbering job?" , "reduced cover above" .)