Raise one amid many (5)
I believe the answer is:
hoist
'raise' is the definition.
(hoisting is a kind of raising)
'one amid many' is the wordplay.
'one' becomes 'i' (Roman numeral).
'amid' indicates putting letters inside.
'many' becomes 'host' (I've seen this in other clues**).
'i' going inside 'host' is 'HOIST'.
(Other definitions for hoist that I've seen before include "Device for lifting, often attached to 5 down" , "Lifting tackle" , "Elevate" , "Winch" , "One that could raise" .)