A word imitative of the sound of noisy weeping or laughter; also an expression of contempt (Sc.).
c. 1525. Skelton, Replyc., 75. Wytlesse wandring to and fro! With, Te he, ta ha, bo ho, bo ho!
1850. Thackeray, Pendennis, II. 148. Warrington fairly burst out into a boo-hoo of laughter.
180879. Jamieson, Roxb., I wouldna gi a boo-hoo for you.
1884. Graphic, 11 Oct., 387/2. Shrill and dolorous boo-hoos.