ノック
nokku

Noun
Suru Verb

1. knock; knocking

Transitive
だれかがドアをノックした。
darekaga doao nokku shita.
Someone knocked on the door.
Noun
Suru Verb

2. fungo hitting; hitting balls for fielding practice

Transitive
Baseball
Noun
Suru Verb

3. tap; click (e.g. of a retractable pen or mechanical pencil)

Transitive