a stream that is the source or a source of a river
WordReference Random House Unabridged Dictionary of American English © 2025
head•stream
(hed′strēm′),USA pronunciation n.
- a stream that is the source, or one of the sources, of a river.
- head + stream 1810–20
Collins Concise English Dictionary © HarperCollins Publishers::
'headstream' also found in these entries (note: many are not synonyms or translations):