Lexical Definition

‎νεωκόρος‎ neōkóros (neh-o-kor'-os) temple guard ^G:N-M
from a form of ‎ναός‎ and (to sweep)

worshipper.

• a temple-servant, i.e. (by implication) a votary

Abbott-Smith

* νεω-κόρος, -ου,
a temple-keeper; as honorary title given to a city (v. DB, i, 722 b): Ac 19:35.†

Abbott-Smith References

Liddell-Scott-Jones

νεωκόρος-ος, ὁ,

Doric dialect νᾱοκόρος [Refs 2nd c.BC+]: contraction νᾱκόρος [Refs 3rd c.BC+]: as feminine, [Refs 2nd c.AD+]; ναυκόρος, ἡ, Buresch Aus Lydien p.58: poetry νηοκόρος [Refs 1st c.AD+]:—warden of a temple, as a sacred officer, τοῖς ἱεροῖς ν. γίγνεσθαι [Refs 5th c.BC+]; ἱερέας τε καὶ ν.[Refs 5th c.BC+]; βωμοῖο ν. [Refs 1st c.AD+]

__2 sacristan, [Refs 3rd c.BC+]; ἐνβόλιον ἔχων ν. in a list of silver articles, [Refs]
__II title assumed by Asiatic cities in Imperial times, when they had built a temple in honour of their patron-god or the Emperor, as Ephesus, ν. Ἀρτέμιδος [NT]; also as adjective, τῷ ν. Ἐφεσίων δήμῳ [Refs 2nd c.AD+]; δὶς ν. τῶν Σεβαστῶν, of Ephesus, [Refs 2nd c.AD+]; of Smyrna, [Refs] sweep, the originally sense being probably temple-sweeper,[Refs 5th c.BC+]

_{LSJ Scripture Refs: Acts.19.35}