As a Noun: 1. The act of putting you fingertips gently on something. English = touch, tap. 2. A request, usually written, to ask formally to be allowed to have something or do something. English = application. As a Verb or Adjective: 1. To gently put your fingertips on something. English = touch, tap. 2. To write to ask formally to be allowed to have something or do something, especially a job. English = apply. 3. To tap someone on the shoulder in order to get their attention so that you can talk (sign) to them.