Pennant-like flag rebel leader's hid in old paddleboat? (8)
I believe the answer is:
streamer
'pennant' is the definition.
(I know that pennant can be written as streamer)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for streamer that I've seen before include "Ribbon for throwing" , "Heavy cold" , "Long, narrow flag" , "that hangs about now?" , "Narrow decorative strip or flag" .)