Meaning of "B" Movie

a low-budget movie, especially (formerly) one made for use as a companion to the main attraction in a double feature.

B movie

Movie B

n.
A film produced with a low budget, originally made to accompany the main feature in a double billing. It is also called B picture .

B picture

Image B

n n n.
a low budget mediocre movie made especially. To accompany an important feature film in a double invoice. It is also called B movie.