Quick Definition
τρίζω v. I grate, gnash
Strong's Definition
to creak (squeak), i.e. (by analogy) to grate the teeth (in frenzy)
Derivation: apparently a primary verb;
KJV Usage: gnash
UBS Dictionary of the Greek New Testament
verb
23.41 · Physiological Processes and States · Processes Involving the Mouth, Other Than Eating and Drinking
to grind the teeth, to gnash the teeth, gnashing of teeth the grinding or the gnashing of the teeth, whether involuntary as in the case of certain illnesses, or as an expression of an emotion such as anger or of pain and suffering The action of grinding one’s teeth in the case of an epileptic fit is so widespread that it is normally not difficult to find some way of expressing this type of action.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
τρίζω ; to squeak, make a shrill ery, (Hom., Hdt., Aristot., Plut., Leian., al.) : trans. τοὺς ὀδόντας, to grind or gnash the teeth, Mk. ix. 18; κατά twos, Ev. Nicod. e. δ.
Mounce Concise Greek Dictionary
τρίζω trizō 1x
to creak, grating sound; to gnash, grind the teeth, Mk. 9:18*
Abbott-Smith Greek Lexicon
** τρίζω
[in Aq.: Am 2:13; Sm.: Is 38:14 * ;]
prop., of sounds by animals, to cry, chirp, etc.
Of other sounds, e.g., trans., τ. ὀδόντας, to gnash or grind the teeth: Mk 9:18.†
Moulton & Milligan — Vocabulary of the Greek NT
τρίζω 488 (account of a trial—a.p. 121-2) ἠ]ξίου πρὸ πόσου χρόνου οἰκοδομῆσαι; “Iépat πρὸ τριετίας, 2). 342° (late ii/A.D.) ἐπὶ τὴν λοιπ(ὴν) (τριετίαν), *‘for the remaining period of three years,” and P Amh II. 1007 (A.D. 198-211) τῆς ὅλης τριετίας. The adj. τριετής occurs in 24. 68%" (late i/A.D.) τῶι μὲν τῆς ἀτελείας τριετεῖ χρόνῳ, and the verb τριετίζω fer in Gen 155. See also P Oxy XVII. 2105° (A.D. 147-8) tpretnprkd|s] ἀγῴώ[ν, ‘a triennial contest.
Liddell-Scott-Jones — Greek-English Lexicon
τρίζω (trizō) — to gnash. τρίζω, [Refs 8th c.BC+]; but perfect τέτριγα is more frequently in present sense, Epic dialect participle τετριγῶτες, for τετριγότες, [Refs 8th c.BC+] —properly of sounds uttered by animals (compare τριγμός, τρύζω), utter a shrill cry, of young birds, [Refs 8th c.BC+]; of bats, [Refs 8th c.BC+]; of the Τρωγοδύται, τετρίγασι κατά περ αἱ νυκτερίδες [Refs]; of partridges, [Refs 4th c.BC+]; of the ἴυγξ,[Refs]; of locusts, [Refs]; of young swallows, [Refs 2nd c.AD+]; of the elephant, [Refs]; of mice, [Refs 4th c.BC+]; of the fish called σελάχη, [Refs 4th c.BC+]: also applied to the noise made by ghosts, 'squeak and gibber', [Refs 8th c.BC+]; ἔτριζον δίκην ἀσπίδων (αἱ ψυχαί) [Refs 2nd c.AD+]
2. of other sounds, τετρίγει (Epic dialect pluperfect) δ᾽ ἄρα νῶτα θρασειάων ἀπὸ χειρῶν the wrestlers' backs creaked, [Refs 8th c.BC+]; so τρίζει, crepitates, of a broken collar-bone, [Refs 2nd c.AD+]grinds, [Refs 5th c.BC+]; τὸ τρίζειν ἀκουσίως involuntary gnashing, [NT+2nd c.AD+]; of a musical string, give a crack, [Refs]; of an axle, creak, ἄξων τετριγὼς ὑπ᾽ ἄμαξαν [Refs 3rd c.BC+]; so of a cart-wheel, [Refs 2nd c.AD+]; of a shoe, [Refs 2nd c.AD+]; ἡ κοιλίη τ. [Refs 5th c.BC+]; of singing in the ears, τὰ ὦτα τέτριγε [Refs]; of the hissing or crackling of a person burnt in the fire, [Refs 5th c.BC+]