Definition: "Cook"

This uses initial letters - look for a word that indicates taking the first letters of certain words in the clue.

The word 'heads' indicates you should take the first letter of each of the words: 'Cooked', 'Halved', 'Elephant', and 'Fish'.

Answer: CHEF | 'Heads' indicates first letters - take the initial letters of Cooked Halved Elephant Fish = C-H-E-F