Dog deposited between two men (8)
I believe the answer is:
alsatian
'dog' is the definition.
(I know that Alsatian is a type of dog)
'deposited between two men' is the wordplay.
'two men' can mean two substitutions for 'man'.
'deposited' becomes 'sat' (sit can mean to deposit or place down).
'between' indicates putting letters inside.
'man' becomes 'Al' (man's name).
'man' becomes 'ian' (man's name).
'al'+'ian'='alian'
'sat' put into 'alian' is 'ALSATIAN'.
(Other definitions for alsatian that I've seen before include "Large canine, may be police dog" , "Large dog and someone from Alsace" , "Large dog and someone from northern France" , "Old Frenchman" , "aggressive dog" .)