After mistake on circuit, pressure for F1 starter (6)
I believe the answer is:
bishop
'f1 starter' is the definition.
(in chess, one bishop starts on the F1 square)
'after mistake on circuit pressure' is the wordplay.
'after' says to put letters next to each other.
'mistake' becomes 'bish' (informal term for an error).
'on' means one lot of letters go next to another.
'circuit' becomes 'o'.
'pressure' becomes 'p' (abbreviation).
'bish'+'o'='bisho'
'bisho' next to 'p' is 'BISHOP'.
'for' is the link.
(Other definitions for bishop that I've seen before include "one of four beginning on board" , "Church dignitary" , "Chess piece and senior religious person" , "Senior member of the Christian clergy" , "High-ranking clergyman" .)