Search for accompaniment for chips (4)
I believe the answer is:
fish
'search' is the definition.
(fishing is a kind of searching)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for fish that I've seen before include "Cod, dab, eel and ray" , "Aquatic creature; rail-joining plate" , "Aquatic vertebrate" , "Possibly the sole" , "Aquarium" .)