knocking >> nɒk
Definition: [verb] strike a surface noisily to attract attention, especially when waiting to be let in through a door.
Example: he strolled over and knocked on a door marked Enquiries
Definition: [verb] collide with (someone or something), giving them a hard blow.
Example: he deliberately ran against her, knocking her shoulder
Definition: [verb] talk disparagingly about; criticize.
Definition: [verb] approach (a specified age).
Example: he's younger than his brother—knocking seventy