Hoot!

(1992 Memoir)
The Ellmans, [Caroline & Frederick, came from Germany,] so their children were of German stock of which Hattie [Harriet] was the youngest.  My mother, an invalid, enjoyed having Hattie come and she enjoyed the railroad trip.  "Hoot!" my father would call to her.  And both would shake with laughter because "Hoot" means "Hat" in German, about all the German my father knew.  She was one of a family of six and a milliner by trade.  She could take a straw frame, tack up the brim, run a narrow ribbon around a daisy, and you'd be proud to wear it to church.