Lit. "A good hour." Colloquially, "May the child come at the right time"—said upon learning of a pregnancy.
At the beginning of the Passover seder, the youngest person asks the Four Questions. Here's a handy guide to the questions in English and Hebrew, with a downloadable melody and printable version.
Don't be overwhelmed by hosting your own seder. Use this handy checklist to help you prepare!