Quick Definition
ἐμέω v. I vomit forth
Strong's Definition
of uncertain affinity; to vomit
KJV Usage: (will) spue
UBS Dictionary of the Greek New Testament
verb
23.44 · Physiological Processes and States · Processes Involving the Mouth, Other Than Eating and Drinking
to vomit Since a term meaning ‘to vomit’ often carries somewhat vulgar connotations, ἐμέω in REV 3:16 has frequently been translated as ‘to spit out of my mouth.’
It is also possible to interpret ‘to vomit out of the mouth’ as an idiom meaning ‘to reject.’
1 Though it is possible to understand the expression vomit out of the mouth as being an idiom meaning to reject, it is probably better to assume that this expression (ἐμέω ἐκ τοῦ στόματος) is simply used figuratively rather than being a conventionalized idiom.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἐμέω, -ὦ [(cf. Skr. vam, Lat. vom-ere; Curtius § 452; Vanitek p. 886 sq.)]: 1 aor. inf. ἐμέσαι ; to vomit, vomit forth, throw up, fr. Hom. down: τινὰ ἐκ τοῦ στόματος, i. 6. to reject with extreme disgust, Rev. iii. 16.
Mounce Concise Greek Dictionary
ἐμέω emeō 1x
to vomit, Rev. 3:16*
Abbott-Smith Greek Lexicon
ἐμέω, -ῶ
[in LXX: Is 19:14 (קֵא)* ;]
to vomit: fig., Re 3:16.†
Moulton & Milligan — Vocabulary of the Greek NT
ἐμέω. Syll 803328 (iii/B.c.) μετὰ δὲ τοῦτο φιάλαν οἱ Sd[pev φάρμακον ἔχουσαν] καὶ κέλεσθαι ἐκπιεῖν, ἔπειτα ἐμεῖν κέλεσίθαι: αὐτὰ δὲ ἐμέσαι, πᾶν] δὲ ἐμπλῆσαι τὸ λώπιον τὸ αὑτᾶς. Cf. Cic. “121. xili. 52. 1 ἐμετικὴν agebat.
Liddell-Scott-Jones — Greek-English Lexicon
ἐμέω (emeō) — to vomit. ἐμέω [Refs 8th c.BC+], imperfect ἤμουν [Refs 5th c.BC+], Ionic dialect ἤμεον [Refs 5th c.BC+]: future ἐμέσω [Refs 5th c.BC+]: future middle ἐμέομαι [Refs 5th c.BC+]: aorist ἤμεσα [Refs 5th c.BC+], infinitive ἐμέσαι [Refs 5th c.BC+]; Epic dialect ἔμεσσα (ἀπ-) [Refs 8th c.BC+]; ὑπερ-έμησα occurs in the Mss. of [Refs 5th c.BC+]: perfect ἐμήμεκα [Refs 2nd c.AD+]: pluperfect ἐμημέκεε [Refs 5th c.BC+] —passive, future ἐμεθήσομαι (ἐξ-) [LXX]: aorist infinitive ἐμεθῆναι [Refs 2nd c.AD+]: perfect ἐμήμεσμαι [Refs 2nd c.AD+]:—vomit, throw up, αἷμ᾽ ἐμέων [Refs 8th c.BC+]: absolutely, vomit, be sick, [Refs 5th c.BC+]; ἐ. πτίλῳ to make oneself sick with a feather, [Refs 5th c.BC+]
2. metaphorically, throw up a flood of words, [Refs 5th c.BC+], cf. Sanskrit vámiti 'vomit', Latin vomo, vomitus, Lithuanian vémti, etc.)