Definition of side stream in English:
A tributary stream.
- We pushed on and were just thinking that it wasn't going to be easy to get much further when we were rewarded by a waterfall on a side stream, a thin ribbon dropping perhaps forty feet to a platform and then further into a pool.
- Police say 60-year-old Kenneth Jagger had been walking on tree trunks across the River Roch when he slipped, falling 10 feet into a side stream.
- A side stream of the Quoile was visibly contaminated with human sewage and other wastes.