What does sideshow mean in Teen Patti?

Direct answer
In Teen Patti, sideshow is a request by one seen player to compare cards with the previous seen player. If the request is accepted, the weaker hand usually packs. If the request is declined, the round continues under the table's rules.
How it feels during play
As a player, I think of sideshow as a private comparison step, not a final show for the whole table. It normally happens between two seen players sitting in order. Blind players usually are not part of a sideshow request. Because apps and local tables can vary, always check the specific table rules before assuming the same behavior everywhere.
Common beginner mistake
Many beginners think sideshow means the game is over. It does not. It only compares two eligible players when allowed. The rest of the round may continue after one player packs.
Related reading
For the full flow, read Teen Patti rules, hand ranking, and more answers in Teen Patti Q&A.