Haggada n. : A story, anecdote, or legend in the Talmud, to explain or illustrate the text of the Old Testament.

Example:
Where can I find an online Haggada ?

Taxonomy
Haggadah, Yerushalmi, Haggadot, Haggadah of Pesach, compilation, additions, manuscript, free encyclopedia, Talmudic, History, Rav Nachman, Rav Yehudah, The Malbim Haggadah, fourteenth century, Jewish tradition, Passover, Rav, Shmuel.

Defination from the web:
Overview of the Haggadah, a book that serves as guide, script, and liturgy of the Passover seder. Includes information on the compilation of the Haggadah and on the manuscript's past 1000 years.