“Move regularly” means permit for worker (2,7)
I believe the answer is:
en passant
'move regularly means permit for worker' is the definition.
I can't tell whether this definition defines the answer.
'regularly means permit for worker' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'permit' becomes 'pass' (passing is a kind of permiting).
'for' says to put letters next to each other.
'worker' becomes 'ant' (worker is a type of ant).
The alternating letters of 'means' are 'en'.
'en'+'pass'+'ant'='EN PASSANT'
Can you help me to learn more?
(Other definitions for en passant that I've seen before include "while going by" , "Way of capturing pawn" , "By the way or in passing, as in chess move" , "Incidentally, in the course of doing something else" , "In passing like chess move" .)