Each end of race precise (5)
I believe the answer is:
every
'each' is the definition.
('every' can be a synonym of 'each')
'end of race precise' is the wordplay.
'end of' says to take the final letters.
'precise' becomes 'very' ('very' can be similar in meaning to 'precise').
The final letter of 'race' is 'e'.
'e'+'very'='EVERY'
(Other definitions for every that I've seen before include "'God bless us - - one !'" , "All possible; the utmost" , "Each single (item)" , "The best possible" , "Each (one of a set)" .)