Noun detention has 2 senses
  1. detention, hold, custody - a state of being confined (usually for a short time); "his detention was politically motivated"; "the prisoner is on hold"; "he is in the custody of police"
    --1 is a kind of confinement
    Derived form: verb detain1
  2. detention - a punishment in which a student must stay at school after others have gone home; "the detention of tardy pupils"
    --2 is a kind of
    punishment, penalty, penalization, penalisation
    Derived form: verb detain1