The Collaborative International Dictionary of English v.0.48:
Canebrake \Cane"brake\ (k[=a]n"br[=a]k`), n. A thicket of canes. --Ellicott. [1913 Webster] canecutterWordNet (r) 3.0 (2006):
canebrake n 1: a dense growth of cane (especially giant cane)