Restraint for dogs beginning to hunt beyond meadows (5)
I believe the answer is:
leash
'restraint for dogs' is the definition.
(dog leash)
'beginning to hunt beyond meadows' is the wordplay.
'beginning to' says to take the initial letters.
'beyond' says to put letters next to each other.
'meadows' becomes 'leas' (lea can mean a meadow or field).
The first letter of 'hunt' is 'h'.
'h' after 'leas' is 'LEASH'.
(Other definitions for leash that I've seen before include "Restraining strap for dog" , "Rope or chain restraint" , "Animal restraint" , "Restraint for a dog" , "Bind" .)