Scheme of works with no end (4)
I believe the answer is:
plan
'scheme' is the definition.
(synonyms)
'works with no end' is the wordplay.
'works' becomes 'plant' (synonyms).
'with no end' means to remove the last letter.
'plant' with its final letter removed is 'PLAN'.
'of' acts as a link.
(Other definitions for plan that I've seen before include "Agenda" , "Diagram; design" , "Project" , "Scale drawing; scheme" , "Intend" .)