Lexical Definition

‎ἀνάθημα‎ anáthēma (an-ath'-ay-mah) a vow offering ^G:N-N
from ‎ἀνατίθεμαι‎ (like ‎ἀνάθεμα‎, but in a good sense)

gift.

• a votive offering

Abbott-Smith

** ἀνάθημα, -τος, τό (cf. ἀνάθημα, and v. MM, VGT, s.v.), [in LXX often as v.l. for ἀνάθεμα (חֵרֶם), and in Nu 21:3, Jg 1:17 for חׇרְמָה, but prop. in III Mac 3:17, al.;]
a gift set up in a temple, a votive offering: Lk 21:5 (LT, -θεμα).†

Abbott-Smith References

Liddell-Scott-Jones

ἀνάθημα, ατος, τό,

(ἀνατίθημι) that which is set up: hence, like{ἄγαλμα}, votive offering set up in a temple, [Refs 5th c.BC+]

__2 used by [Refs 8th c.BC+] delight, ornament, μολπή τ᾽ ὀρχηστύς τε· τὰ γάρ τ᾽ ἀναθήματα δαιτός[Refs 8th c.BC+]; τοῖς τεκοῦσιν ἀνάθημα βιότου, of children, [Refs 5th c.BC+]; to help deserving poverty is βασιλικοῦ πλούτου ἀ. καὶ κατασκεύασμα λαμπρότατον[Refs 1st c.BC+]
__3 of a slave in a temple, ἀ. πόλεως devoted to this service by the city, [Refs 5th c.BC+] —Cf. ἀνάθεμα.