Washington holds one’s record (4)
I believe the answer is:
disc
'record' is the definition.
(eg a CD, compact disc)
'washington holds one's' is the wordplay.
'washington' becomes 'dc' (Washington DC).
'holds' indicates putting letters inside.
'one's' becomes 'I's' (Roman numeral).
'dc' enclosing 'is' is 'DISC'.
(Other definitions for disc that I've seen before include "Capital of India" , "Circle" , "put on by jockey?" , "Old record" , "45, eg?" .)