House music with a hip-hop influence. Vocals are usually rapped over a house beat.
The actual hip-house scene was almost exclusively a Chicago phenomenon which started (on wax) in 1988 and had run its course by the end of 1990. It was created by house music producers, and featured a fast, syncopated rapping flow. This was in contrast to what pioneering hip-house producer Fast Eddie called "house rap", in which hip-hop artists from other regions combined more traditional, slower rapping styles with house, or the European house- and techno-based club music which incorporated rapping as a "hard"/"streetwise" novelty.
On Discogs, the Hip-House tag tends to be applied to any combination of rap vocals with house music, thus it includes all of these variations from 1986 to the present day.