Quick Definition
βαΐον, ου, τό n.n. a palm branch
Strong's Definition
a diminutive of a derivative probably of the base of 939; a palm twig (as going out far)
KJV Usage: branch
UBS Dictionary of the Greek New Testament
noun, n. | -ου
3.53 · Plants · Non-Fruit Parts of Plants
palm branch branch of the palm tree (φοῖνιξ) βάϊον is a technical term meaning ‘palm branch,’ and in JHN 12:13 τῶν φοινίκων ‘of palm trees’ may have been added redundantly, since the term βάϊον may not have been regarded as sufficiently well known to readers.
1 Though in English it is generally the custom to speak of what in Greek is βάϊον or φοῖνιξ (3.53) as a palm branch, technically it is only a very large leaf, for there are no buds on these so-called branches.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
βαΐον [al. also βάϊον (or even Baiov, Chandler ed. 1 p. 272) ; on its deriv. (fr. the Egyptian) ef. Steph. Thesaur. 8. V. Bais], -ov, τό, a palin-branch ; with τῶν φοινίκων added [so Test. xii. Patr. test. Naph. § 5] (after the fashion of οἰκοδεσπότης τῆς οἰκίας, ὑποπόδιον τῶν ποδῶν, [cf. W. 603 (561)7), Jn. xii. 13. (A bibl. and eccles. word: 1 Mace. xiii. 51; Cant. vii. 8 Symm.; Lev. xxiii. 40 unknown trans. Tn the Grk. church Palm-Sunday is called ἡ κυριακὴ τῶν βαΐων. Cf. Fischer, De vitiis Lexx. N. T. p. 18 sqq.; [Sturz, Dial. Maced. ete. p. 88 sq.; esp. Soph. Lex.s.v.].)
Mounce Concise Greek Dictionary
βάϊον baion 1x
a palm branch, Jn. 12:13*
Abbott-Smith Greek Lexicon
**† βαΐον, ου, τό
(also βὰϊον, another form of βὰϊς, from the Egyptian), [in LXX: I Mac 13:51*;], (freq. in Egyptian π., v. MM, Exp., x);
a palm-branch: Jo 12:13 (DB, i, 314).†
Moulton & Milligan — Vocabulary of the Greek NT
βαΐον. This word, apparently of Egyptian origin, which is found in Bibl. Grk only in 1 Mace 13°, Jn 121%, occurs in the late P Flor I. 373 (v/vi a.p.) δικαίῳ Batw, of a palm branch used as a measuring rod. Bala is quoted in P Tebt IT. p. 69 from a text edited by Wessely; and Batwy occurs in P Leid Vvii-17, but with Bats as nom. in preceding line. The form Batov is presumed by the compounds βαιοφορεῖν and βαιοφορία: see P Tebt II. 2941” (application for the purchase of a priestly office—a.p. 146), where the writer promises ‘‘ to carry the B.” and perform all the other needful offices, also 295" (A.D. 126-38) and 599 (ii/A.D.). For the form Bats see P Lond 131 recto®84 (a.b.78-9) ( =I. p. 181) Pacis, P Oxy IX.12118 (ii/a. D.) Bats χλωρᾶς tS (cf. P Leid (A.D. 215) Zev in the phrase ὑπὸ δένδρα καὶ Bais: Wilcken Chrest. I. p. 128 prints B[@ts]—ought it to be ace. pl. Bacts? In view of the above evidence the word makes yet another deduction from the fast vanishing list of ‘*bibl. and eccles.” words in Grimm.
Liddell-Scott-Jones — Greek-English Lexicon
βαΐον (baion) — palm branch. βάϊον, τό, ={βάϊς}, [NT]; for genitive plural βαΐων see at {βάϊς}.
II. measuring-rod, β. δικαίῳ ἑξαπήχει [Refs 5th c.AD+]