Clipper could make truck stay (5,4)
I believe the answer is:
cutty sark
'clipper' is the definition.
(I've seen this before)
'make truck stay' is the wordplay.
'make' indicates anagramming the letters.
'truck'+'stay'='truckstay'
'truckstay' is an anagram of 'CUTTY SARK'.
'could' is the link.
(Other definitions for cutty sark that I've seen before include "Famous old sailing ship" , "Vessel" , "Tea clipper" , "Clipper preserved at Greenwich" .)