Webster's Revised Unabridged Dictionary · 1913

Hosanna

Hosanna (ho*zan"nȧ) , noun

[Greek {not transcribed}, from Hebrew hōshī'āh nnāsave now, save, we pray, hōshīa' to save (Hiphil, a causative form, of yāsha') + , a particle.]

A Hebrew exclamation of praise to the Lord, or an invocation of blessings.
Hosanna to the Highest. — Milton
Hosanna to the Son of David. — Matt. xxi. 9