The seventh day of the sukkotfestival is called Hoshana Rabbah During each of the preceding six days of the Succot festival, a single stanza of the hoshanotlitany is said the congregation makes a circuit around the reader's platform carrying the four-speciesand during the recital (except on Sabbath) poetic supliations are made concerning agricultural crops for the coming year, that they not suffer from various natural disasters. On Hoshana Rabbah---literally "the Enhanced Hoshana"--- because seven circuits (hakkafot) are made, while, in addition to the stanzas that had been recited during the past six days, additional more serious hoshanotare added. They commemorate the circuits around the altarmade by the priests in the temple-in-jerusalem.

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הושיעה־נא (Hoshaʿ-na) = "Please help"

In Jewish liturgy, the word is applied specifically to the Hosha-na Service, a cycle of prayers from which a selection is sung each morning during Sukkot, the Feast of Booths or Tabernacles. The complete cycle is sung on the seventh day of the festival, which is called Hoshana Rabbah (הושענא רבא, "Great Hosha-na".

Note: Na is a Hebrew particle that is attached to commands to soften them, in the way that we add the word "please"