One's caught in crowd in lift (5)
I believe the answer is:
hoist
'lift' is the definition.
('hoist' can be a synonym of 'lift')
'one's caught in crowd' is the wordplay.
'one' becomes 'i' (Roman numeral**).
'caught in' is an insertion indicator.
'crowd' becomes 'host' (I've seen this before).
'i' placed inside 'host' is 'HOIST'.
'in' is the link.
(Other definitions for hoist that I've seen before include "Heave upwards" , "elevator" , "piece of lifting gear" , "One that could raise" , "Lift (mechanically)" .)