Animal found in steamship, possibly (5)
I believe the answer is:
hippo
'animal' is the definition.
(I know that hippo is a type of animal)
'in steamship possibly' is the wordplay.
'in' says the answer is hidden in the clue.
'HIPPO' can be found hidden inside 'steamship possibly'.
'found' acts as a link.
(Other definitions for hippo that I've seen before include "Afr. river mammal" , "Thick-skinned type" , "Augustine's place" , "Massive thick-skinned animal of African rivers" , "Large semi-aquatic mammal (abbr)" .)