[noun] [C] - a small show or attraction in addition to the main entertainmentCarol won a large soft toy at a sideshow at the fair.At the circus, the clowns put on a very clever side-show.(figurative) As a sideshow to (= a less serious or important activity than) the adult events, we have the children's races.
SIDESHOW
Meaning of SIDESHOW in English
Cambridge English vocab. Кембриджский английский словарь. 2012