Strong's Greek #2171 - εὐχή, ῆς, ἡ euché (a prayer)

prayer, vow.

From euchomai; properly, a wish, expressed as a petition to God, or in votive obligation -- prayer, vow.

see GREEK euchomai

Strong's 2171: εὐχή

εὐχή, εὐχῆς, ἡ (εὔχομαι (from Homer down);

1. a prayer to God: James 5:15.

2. a vow (often so in the Sept. for נֵדֶר and נֶדֶר, also for נֵזֶר consecration, see ἁγνίζω): εὐχήν ἔχειν, to have taken a vow, Acts 18:18; with ἐφ' ἑαυτῶν added (see ἐπί, A. I. 1 f., p. 232a), Acts 21:23.

Strong's Greek: 2171. εὐχή (euché) — 3 Occurrences

Acts 18:18 - N-AFS
GRK: εἶχεν γὰρ εὐχήν
NAS: cut, for he was keeping a vow.
KJV: for he had a vow.
INT: he had indeed a vow

Acts 21:23 - N-AFS
GRK: ἄνδρες τέσσαρες εὐχὴν ἔχοντες ἐφ'
NAS: men who are under a vow;
KJV: four men which have a vow on
INT: men four a vow having on

James 5:15 - N-NFS
GRK: καὶ ἡ εὐχὴ τῆς πίστεως
NAS: and the prayer offered in faith
KJV: And the prayer of faith shall save
INT: and the prayer of faith