Word Study
tu-whoo
CIDE DICTIONARY
tu-whoo, n. & interj.
Words imitative of the notes of the owl. [1913 Webster]
"Thy tu-whits are lulled, I wot,
Thy tu-whoos of yesternight." [1913 Webster]
Thy tu-whoos of yesternight." [1913 Webster]
For further exploring for "tu-whoo" in Webster Dictionary Online