narrowcast

verb (used without object), nar·row·cast or nar·row·cast·ed, nar·row·cast·ing. Radio and Television.

1. to aim a program or programming at a specific, limited audience or sales market.

verb -casts, -casting, -cast or -casted

1. (tr) to supply (television programmes) to a small area by cable television
2. (intr) (of programmers or advertisers) to target a specialized audience on radio or television