hosanna(n = noun.communication) - a cry of praise or adoration (to God);
is a kind of call, cry, outcry, shout, vociferation, yell

   A Hebrew exclamation of praise to the Lord, or an invocation of blessings. Milton. [1913 Webster]
"Hosanna to the Son of David." [1913 Webster]

hosanna, n. & int. a shout of adoration (Matt. 21:9, 15, etc.).

Etymology:
ME f. LL f. Gk hosanna f. Heb. h{ocirc}sa' na for h{ocirc}s{icirc}' a-nn{acirc} save now!

N  worship, adoration, devotion, aspiration, homage, service, humiliation, kneeling, genuflection, prostration, prayer, invocation, supplication, rogation, intercession, orison, holy breathing, petition, collect, litany, Lord's prayer, paternoster, beadroll, latria, dulia, hyperdulia, vigils, revival, cult, anxious meeting, camp meeting, ebenezer, virginal, thanksgiving, giving thanks, returning thanks, grace, praise, glorification, benediction, doxology, hosanna, hallelujah, allelujah, Te Deum, non nobis Domine, nunc dimittis, paean, benschen, Ave Maria, O Salutaris, Sanctus, The Annunciation, Tersanctus, Trisagion, psalm, psalmody, hymn, plain song, chant, chaunt, response, anthem, motet, antiphon, antiphony, oblation, sacrifice, incense, libation, burnt offering, heave offering, votive offering, offertory, discipline, self-discipline, self-examination, self-denial, fasting, divine service, office, duty, exercises, morning prayer, mass, matins, evensong, vespers, undernsong, tierce, holyday, worshipper, congregation, communicant, celebrant, worshipping, devout, devotional, reverent, pure, solemn, fervid, Int, hallelujah, allelujah!, hosanna!, glory be to God!, O Lord!, pray God that!, God grant, God bless, God save, God forbid!, sursum corda, making their lives a prayer, ora et labora, prayers ardent open heaven.