Knitwear against counter absorbs big drops of water (7)
I believe the answer is:
niagara
'big drops of water' is the definition.
(Niagara Falls)
'knitwear against counter absorbs' is the wordplay.
'absorbs' indicates the answer is hidden within the clue.
'counter' shows that the letters should be reversed in order.
'aragain' can be found hidden inside 'knitwear against'.
'aragain' backwards is 'NIAGARA'.
(Other definitions for niagara that I've seen before include "Great waterfalls on US-Canada border" , "1953 Marilyn Monroe film noir thriller" , "River flowing from Lake Erie into Lake Ontario" , "Famous waterfall" , "North American waterfall" .)