brigalow (?br???l??) n (Plants) a. any of various acacia treesb. (as modifier): brigalow country. [C19: from a native Australian language]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014