owl-hoot
/ˈaʊlhuːt/noun
1Dusk, nightfall. Now archaic and rare.
2The hooting sound made by an owl; a sound imitating or resembling this.
3 US slang. In form owlhoot. Especially in the language of Wild West fiction, etc.: a fugitive, an outlaw. Hence: a worthless or contemptible person. Frequently attributive, especially in owlhoot trail (used allusively with reference to the life of a fugitive or outlaw).
Origin
Mid 19th century; earliest use found in Blackwood's Magazine. From owl + hoot.