: foolish talk or activity; nonsense – often used interjectionally
"Charles," said Cordelia, "Modern Art is all bosh, isn't it?"
"Oh, I'm so glad. I had an argument with one of our nuns and she said we shouldn't try and criticize what we didn't understand. Now I shall tell her I have had it straight from a real artist, and snubs to her."
—Evelyn Waugh, Brideshead Revisited, 1945
About the Word:
Bosh comes from boş, a Turkish word meaning "empty; useless."