Washington holds one’s record (4)
I believe the answer is:
Here is my best explanation:
'record' is the definition.
('disc' can be a synonym of 'record')
'washington holds ones' is the subsidiary indication.
'washington' becomes 'dc' (Washington DC).
'holds' means one lot of letters goes inside another.
'ones' becomes 'is' ('I' can be a synonym of 'one').
'dc' going around 'is' is 'disc'.
(Other definitions for disc that I've seen before include "Layer of cartilege between vertebrae", "counter", "Circular plate", "something moving in the spine", "CD or record", "Circle", "Thin flat circular object", "Back part", "capital" and "Protein-constituent acid".)