knock at (something)

knock at (something)

To strike something sharply and swiftly. Hush for a moment. I thought I heard someone knocking at the door. I was kept awake by the sound of tree branches knocking at the windows.
See also: knock
Farlex Dictionary of Idioms.

knock at something

to knock [on something] at a particular location. I could hear someone knocking at the door next to mine. Who is knocking at the door?
See also: knock
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • knock at
  • knock away
  • hush-hush
  • live over
  • hush money
  • hush fell over
  • a hush fell over
  • up with the lark
  • up with the lark(s)
  • be up with the crows