let in let in /lɛt ɪn/

verb

1. () Allow participation in or the right to be part of; permit to exercise the rights, functions, and responsibilities of  ( admit , let in , include )
   allow participation in or the right to be part of; permit to exercise the rights, functions, and responsibilities of
    Admit someone to the profession
   admit someone to the profession
    She was admitted to the New Jersey Bar
   She was admitted to the New Jersey Bar
   
2. Allow to enter; grant entry to  ( intromit , let in , allow in , admit )
   allow to enter; grant entry to
    We cannot admit non-members into our club building
   We cannot admit non-members into our club building
    This pipe admits air
   This pipe admits air