Silent attendant gets a lift (10)
I believe the answer is:
dumbwaiter
'a lift' is the definition.
(dumbwaiter is a kind of lift)
'silent attendant' is the wordplay.
'silent' becomes 'dumb' (synonyms).
'attendant' becomes 'waiter' (a waiter attends to diners).
'dumb'+'waiter'='DUMBWAITER'
'gets' is the link.
(Other definitions for dumbwaiter that I've seen before include "Small lift for food" , "Food table, lift" .)