[Imitative: cf. prec. and WOUGH v.] intr. To howl; to waul.

1

1806.  R. Jamieson, Pop. Ballads, I. 234. The wolf wow’d hideous on the hill.

2

1824.  Carr, Craven Gloss., Wow, to howl.

3

1900.  C. Lee, Cynthia in West, v. 69. You should hear her wow, just like an owld cat!

4