Emily Dickinson Lexicon

SQUEAL, v.i. [This is only a different orthography of squall; Ir. sgal, a squealing. See Squall.]

To cry with a sharp shrill voice. It is used of animals only, and chiefly of swine. It agrees in sense with squeak, except that squeal denotes a more continued cry than squeak, and the latter is not limited to animals. We say, a squealing hog or pig, a squealing child; but more generally a squalling child.