People's pursuits (5)
I believe the answer is:
races
'people's pursuits' is the definition.
Although both the answer and definition are plural nouns, I can't understand how they can define each other.
'people's pursuits' is the wordplay.
'people' becomes 'race' (people can mean a national group or race).
'pursuits' becomes 's' (I am not sure about this - if you are sure you should believe this answer much more).
'race'+'s'='RACES'
Can you help me to learn more?
(Other definitions for races that I've seen before include "Human groups" , "Goodwood events" , "Running competitions" , "Competitions; ethnic groups" , "Scare in sporting contests" .)