It helps in swallowing the lot! (3)
I believe the answer is:
all
'it helps' is the definition.
The definition suggests a singular noun but the answer is not.
'in swallowing the lot' is the wordplay.
'in' indicates a hidden word.
'ALL' is hidden in the letters of 'swallowing lot'.
Can you help me to learn more?
(Other definitions for all that I've seen before include "Monopolist controls this" , "Everyone - complete" , "The lot, everyone" , "Straight garden path" , "SECOND PART OF 8" .)