Short jacket in trunk at end of corridor is old (6)
I believe the answer is:
bolero
'short jacket' is the definition.
(I've seen this before)
'trunk at end of corridor is old' is the wordplay.
'trunk' becomes 'bole' (I've seen this in other clues).
'at end of' suggests the final letters.
'is old' becomes 'o' (common abbreviation eg in OE for Old English).
The last letter of 'corridor' is 'r'.
'bole'+'r'+'o'='BOLERO'
'in' is the link.
(Other definitions for bolero that I've seen before include "Lively Spanish dance" , "Maurice Ravel's most famous work" , "Woman's short jacket" , "Arrange to rob Leo during the dance" , "Spanish dance and a type of jacket" .)