verb (used without object), nar·row·cast or nar·row·cast·ed, nar·row·cast·ing. Radio and Television.
to aim a program or programming at a specific, limited audience or sales market.
Origin of narrowcast
1770–80, for an earlier sense; narrow (broad)cast
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
verb -casts, -casting, -cast or -casted
(tr) to supply (television programmes) to a small area by cable television
(intr) (of programmers or advertisers) to target a specialized audience on radio or television
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012