train ‧ ee /ˌtreɪˈniː◂/ BrE AmE noun [countable]
[ Word Family: noun : ↑ trainee , ↑ trainer , ↑ training , ↑ retraining ; verb : ↑ train , ↑ retrain ; adjective : trained ≠ ↑ untrained ]
someone who is being trained for a job:
The trainees start next week.
trainee manager/solicitor/teacher etc
a trainee hairdresser