'let in' definitions:

Definition of 'let in'

(from WordNet)
verb
Allow participation in or the right to be part of; permit to exercise the rights, functions, and responsibilities of; "admit someone to the profession"; "She was admitted to the New Jersey Bar" [syn: admit, let in, include] [ant: exclude, keep out, shut, shut out]
verb
Allow to enter; grant entry to; "We cannot admit non-members into our club building"; "This pipe admits air" [syn: admit, allow in, let in, intromit] [ant: refuse, reject, turn away, turn down]