IPA: /ˈstriːmlɪt/
KK: /ˈstrimlɪt/
A small flow of water, often smaller than a creek.
The children played by the streamlet, watching the water flow gently over the rocks.
Streamlet → It is formed from "stream" (from Old English *stream*, meaning a small, flowing body of water) and "-let" (a diminutive suffix meaning small). The word "streamlet" refers to a small stream or a little flow of water.
Think of a 'stream' as a small body of flowing water, and the '-let' means small, so a streamlet is a little stream.