[boo sh-wah, -waw]
rubbishy nonsense; baloney; bull: You'll hear a lot of boring bushwa about his mechanical skill.
Origin of bushwa
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
also bushwah, 1920, U.S. slang, euphemistic for bullshit.
Online Etymology Dictionary, © 2010 Douglas Harper