Webster's Revised Unabridged Dictionary · 1913

Yaup

Yaup , intransitive verb

[See Yap, and Yelp.]

To cry out like a child; to yelp. [Scottish & Colloquial United States]

Yaup , noun

[Written also yawp.]

1.
A cry of distress, rage, or the like, as the cry of a sickly bird, or of a child in pain. [Scottish & Colloquial United States]
2.
(Zoology) The blue titmouse. [Provincial English]