Grouse, beef and fish (4)
I believe the answer is:
crab
I believe this is a triple definition!
'grouse' is the first definition.
(thesaurus)
'beef' is the second definition.
(thesaurus)
'and' is a link.
'fish' is the third definition.
(crabbing is a kind of fishing)
(Other definitions for crab that I've seen before include "Seashore crustacean" , "Scuttling crustacean" , "Clawed shellfish" , "Nautical nipper" , "A crustacean; type of apple" .)