What does "hosanna" mean?

[tonychanyt]

New King James Version, Psalm 118:

25a Save now, I pray, O LORD;

save
הוֹשִׁ֘יעָ֥ה (hō·wō·šî·‘āh)
Verb - Hifil - Imperative - masculine singular | third person feminine singular
Strong's 3467: To be open, wide, free, to be safe, to free, succor

I pray
אָנָּ֣א (’ān·nā)
Interjection
Strong's 577: Ah, now! I (we) beseech you!

now
נָּ֑א (nā)
Interjection
Strong's 4994

H4994 indicates urgency or sincerity and takes different meanings based on context.

Mark 11:

9 Hosanna! blessed is the one who comes in the name of the Lord

The Greek word Hosanna (ὡσαννά) comes from two Hebrew words: הוֹשִׁ֨יעָ֥ה נָּ֑א (H3467 hoshi'ah and H4994 na).

5614. hósanna
Usage: (Aramaic and Hebrew, originally a cry for help), hosanna!, a cry of happiness.

HELPS Word-studies
5614 hōsanná – a transliteration of the Hebrew term (hôsî-âh-nā) meaning "Oh, save now!" or "Please save!"

The -na suffix in Hebrew expresses intense emotion. 5614 (hōsanná) comes from two Hebrew roots meaning, "Save now!" (= "Save I pray!").

BDAG:

a shout of praise, hosanna (lit.=‘help’ or ‘save, I pray’, an appeal that became a liturgical formula;

At Jesus' triumphant entrance to Jerusalem, people were crying out "hosanna" to express their petition and joy: Save us now! Jesus.