I}. See Battle of the Yser . 92a ivories {They may be tickled}. "Tickle the ivories" = play the piano. 96a Easton {City near Bethlehem}. Easton and Bethlehem in Pennsylvania. 110a thou {Grand}. Slang terms for a thousand. 1d Na-Nu {TV alien's word}. Mork's greeting in Mork & Mindy was Na-Nu