I can not sit at my outer gate And call what shall soothe my grief; I can not unlock to a king in state, Can not bar a wind- swept leaf! "Home Again" by George MacDonald

Anne's heart throbbed fast as she saw him unlock the gate, and asked herself what was to follow. "Man and Wife" by Wilkie Collins

It might turn out that she could unlock the door that had shut between me and Maida Odell. "Lord John in New York" by C. N. Williamson A. M. Williamson