Linger with sailor on railway (5)
I believe the answer is:
tarry
'linger' is the definition.
(I know that linger can be written as tarry)
'sailor on railway' is the wordplay.
'sailor' becomes 'tar' (tar can mean a sailor).
'on' says to put letters next to each other (in a down clue, letters appear on others).
'railway' becomes 'ry' (abbreviation for railway).
'tar'+'ry'='TARRY'
'with' is the link.
(Other definitions for tarry that I've seen before include "Hot and sticky" , "Lag" , "Drag one's feet" , "Wait" , "'Delay, linger (5)'" .)