Go with a girl to Minehead (3)
I believe the answer is:
vim
'go' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'with a girl to minehead' is the wordplay.
'with' is a charade indicator (letters next to each other).
'a girl' becomes 'vi' (short for Violet).
'to minehead' becomes 'm' (head letter of 'mine').
'vi' next to 'm' is 'VIM'.
Can you help me to learn more?
(Other definitions for vim that I've seen before include "Pep (informal)" , "Exuberant vigour" , "Pep and energy" , "Energy, enthusiasm" , "Liveliness" .)