Quick Definition
πλατεῖα, ας, ἡ n.f. a street
Strong's Definition
a wide "plat" or "place", i.e. open square
Derivation: feminine of G4116 (πλατύς);
KJV Usage: street
Thayer's Greek Lexicon
πλατεῖα, -as, 7, (fem. of the adj. πλατύς, sc. ὁδός [cf. W. 590 (549)]), α broad way, a street: Mt. vi. 5; xii. 19; Lk. x. 10; xiii. 26; xiv. 21; Acts v. 15; Rev. xi. 8; xxi. 21; xxii.2. (Hur., Plut., al.; in Sept. chiefly for an.)
Mounce Concise Greek Dictionary
πλατεῖα plateia 9x
a street, broad way, Mt. 6:5; 12:19; Lk. 10:10
Abbott-Smith Greek Lexicon
πλατεία, -ας, ἡ, v.s. πλατύς.
Moulton & Milligan — Vocabulary of the Greek NT
Liddell-Scott-Jones — Greek-English Lexicon
πλατεῖα (plateia) — wide street/road. Included with: πλᾰτύς, εῖα, ύ, Ionic dialect feminine πλατέα [Refs 5th c.BC+]:—wide, broad, τελαμών [Refs 8th c.BC+]; αἰπόλια πλατέ᾽ αἰγῶν broad herds, i.e. large or spread over a wide space,[Refs 8th c.BC+]; τὴν ὁδὸν τὴν π. [Refs 5th c.BC+]; similarly, π. ὁδὸς τῶν θεῶν [Refs 5th c.BC+]
2. flat, level, χῶρος π. καὶ πολλός [Refs 5th c.BC+]; κάρυα τὰ π., i.e. chestnuts, [Refs 5th c.BC+]; σελάχη, ἰχθύες, [Refs 5th c.BC+]
3. of a man, broad-shouldered, οὐ γὰρ οἱ πλατεῖς, οὐδ᾽ εὐρύνωτοι [Refs 5th c.BC+]
4. of seasons, far advanced, ἔαρ Procl.ad [Refs 8th c.BC+]
5. metaphorically, π. ὅρκος a broad strong oath, [Refs 5th c.BC+]; κατάγελως π. flat (i.e. downright) mockery, [Refs 5th c.BC+]; π. φλήναφος Amelius cited in [Refs 3rd c.AD+]; but πλατὺ γελάσαι, καταγελᾶν, laugh loud and rudely, [Refs 5th c.BC+]
6. broad, of pronunciation, π. λέξις [Refs 4th c.BC+]
7. diffuse, λέξις [Refs 1st c.BC+] adverb -έως[Refs] in fuller detail, διαλεξόμεθα [Refs 2nd c.AD+]; -υτέρως Tz.ad [Refs 3rd c.BC+]: superlative -υτάτως[Refs]
7. b adverb -έως loosely, opposed to ἀκριβῶς, [Refs 5th c.BC+]
8. widespread, frequent, χρῆσις [Refs 4th c.AD+]
9. π. δρόμος, = Latin cursus clabularis, [Refs 6th c.AD+]
II. substantive πλατεῖα (i.e. ὁδός,[Refs 2nd c.AD+], ἡ, street, [NT+4th c.BC+]; ἡ ἱερωτάτη π. [Refs]
II. b (i.e. χείρ) flat of the hand, ταῖσι πλατείαις τυπτόμενος [Refs 5th c.BC+]
II. c a kind of dish or cup, [Refs 3rd c.BC+]
II. d broad stripe or border, [Refs 4th c.BC+]
III. salt, brackish, πλατυτέροισι ἐχρέωντο τοῖσι πόμασι [Refs 5th c.BC+]; πλατέα or πλατύτερα ὕδατα, [Refs 8th c.BC+], is not the salt, but the broad, Hellespont,[Refs 4th c.BC+]. (Cf. Sanskrit pṛthú- 'broad', práthati 'spread out', etc. But in signification [Refs]pa[tnull]u- 'sharp', 'pungent', tripa[tnull]u 'the three saline substances'.)