Fish from the highest point (4)
I believe the answer is:
tope
'fish' is the definition.
(thesaurus)
'the highest point' is the wordplay.
'the highest' becomes 'top' (I've seen this before).
'point' becomes 'e' (E is an example).
'top'+'e'='TOPE'
'from' is the link.
(Other definitions for tope that I've seen before include "What habitual drinkers do" , "Drink to excess" , "Drink hard regularly" , "plantation?" , "Drink heavily" .)