Lexical Definition

‎ἀλάβαστρον‎ alábastron (al-ab'-as-tron) jar ^G:N-N
neuter of (of uncertain derivation), the name of a stone

(alabaster) box.

• properly, an "alabaster" box, i.e. (by extension) a perfume vase (of any material)

Abbott-Smith

ἀλάβαστρον, -ου, τό (also -ος, ὁ, ἡ; colloq. and κοινή for ἀλάβαστος), [in LXX: IV Ki 21:13 (צַלַּחַת)*;]
a box of alabaster (ἀλαβαστίτης) for ointment: Mt 26:7, Mk 14:3, Lk 7:37 (v. DCG, i, 41b; MM, VGT, s.v.).†

Abbott-Smith References

Liddell-Scott-Jones

ἀλάβαστρον [ᾰλᾰ-]

or ἄλᾰβ-στρος, ὁ (ἡ, variant in Ev Marc. 14.3), globular vase without handles for holding perfumes, often made of alabaster, [ἀλάβαστρον (or -ον)">Refs 5th c.BC+] is the earlier Attic dialect form, [Refs 4th c.BC+]: Doric dialect accusative plural ἀλαβάστρως[Refs 3rd c.BC+]:—neuter ἀλάβαστρον [NT+3rd c.BC+]: plural ἀλάβαστρα or -τα [Refs 3rd c.BC+]

_{LSJ Scripture Refs: LXX.2Kgs.21.13 ☩ Mark.14.3}