We have no meanings for "perfunctory knock" in our records yet.
1 After a perfunctory knock , I turned the handle and stepped in.
2 He gave a perfunctory knock , already pushing open the door.
3 She was interrupted by a perfunctory knock at the door.
4 He opened the office door, giving it a perfunctory knock as he did so.
5 She gave her perfunctory knock , and turned the door-handle.
6 There was a perfunctory knock at the door, and Becky Helmington poked her head in.
7 Kline looked like he might debate this but stopped when the door opened after a perfunctory knock .
8 It seemed like hours before Luke, with a perfunctory knock on the open door, came in carrying the crutch.
9 Aw, never mind, I'll-There is a single perfunctory knock and then Ernie's looking in at the brain trust.
10 I arrived at George's villa out of breath, bursting with suppressed excitement, gave a perfunctory knock at the door, and dashed in.
11 Rusty was placing a sterile gauze sponge on the wound when there was a perfunctory knock at the door, followed by Ginny Tomlinson's head.
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