Second person died in warehouse — a docker (9)
I believe the answer is:
stevedore
'a docker' is the definition.
('stevedore' can be a synonym of 'docker')
'second person died in warehouse' is the wordplay.
'second person' becomes 'Eve' (biblical second person created after Adam).
'died' becomes 'd' (abbreviation next to the year of someone's death).
'in' means one lot of letters goes inside another.
'warehouse' becomes 'store' (I've seen this in another clue).
'eve'+'d'='eved'
'eved' put into 'store' is 'STEVEDORE'.
(Other definitions for stevedore that I've seen before include "One loads and unloads ships" , "Unloader of shipping vessels" , "Hold worker" , "Dock worker" , "one working in docks" .)