Waving palms is the gesture of greeting a king, a deliverer, or a triumphant warrior — and Scripture loads it with messianic significance. The crowds at Jesus’ entry into Jerusalem cut palm branches and waved them, crying "Hosanna; Blessed is he that cometh in the name of the Lord: Blessed is the King of Israel that cometh in the name of the Lord" (John 12:13) — the only Gospel to specify palm. The Feast of Tabernacles required the lulav (palm-bundle) to be waved (Leviticus 23:40). The eschatological vision in Revelation places palms in the hands of the redeemed multitude: "a great multitude... clothed with white robes, and palms in their hands" (Revelation 7:9). Every palm waved hails the same King.
(Composite.) The act of brandishing palm branches in welcome of a king or in triumphant joy.
Webster: palm — “a tree of the genus Palma, the emblem of victory.”
The palm branch was a near-universal Mediterranean sign of victory; Maccabean coins were stamped with it; the palms of Palm Sunday belong to that long visual tradition.
John 12:13 — "Took branches of palm trees, and went forth to meet him, and cried, Hosanna: Blessed is the King of Israel that cometh in the name of the Lord."
Leviticus 23:40 — "Ye shall take you on the first day the boughs of goodly trees, branches of palm trees, and the boughs of thick trees, and willows of the brook."
Psalm 92:12 — "The righteous shall flourish like the palm tree."
Revelation 7:9 — "A great multitude... stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands."
‘Palm Sunday’ has become folklore for many Christians; the kingly meaning of the palm has been forgotten.
When the Jerusalem crowds cut palms and shouted Hosanna (Save now), they were treating Jesus exactly as they would treat a victorious Maccabean liberator. The gesture was political, royal, and unmistakable.
Revelation 7:9 closes the loop: the ransomed multitude before the throne hold palms in their hands. The conquering King has come, and the palm-branch crowd is forever gathered. The household's Palm Sunday is a small foretaste of that scene.
Greek has the specific palm-tree word; Hebrew uses two terms for the date palm.
G5404 — φοῖνιξ (phoinix) — palm tree, palm branch.
Note: the Hebrew word tamar (date palm) gives the names Tamar and Tamar (David's daughter and Absalom's daughter).
"Palm Sunday's palms are not floral; they are royal."
"Hosanna with a palm branch — the right way to meet a king."
"Revelation 7's multitude still holds palms; the song continues."