1. narrowcast - Noun
2. narrowcast - Verb
To transmit a programme to selected individuals or groups, especially via cable.
To transmit a medical intervention to a specific organ or type of tissue.
To send out a message or disseminate information to a specific narrow audience rather than the general public.
English Wikipedia has an article on:narrowcastWikipedia
narrowcast (plural narrowcasts)
A programme transmitted in this manner.