Quick Definition
λεῖος, α, ον Adj smooth, level
Strong's Definition
apparently a primary word; smooth, i.e. "level"
KJV Usage: smooth
UBS Dictionary of the Greek New Testament
adjc. | -α, -ον
79.86 · Features of Objects · Uneven [Rough], Level [Smooth]
smooth, level pertaining to being level or smooth (that is, without rough or uneven contours)
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
λεῖος, -e/a, -eiov, [(cf. Lat. levis)], smooth, level: opp. to τραχύς, of ways, Lk. iii. 5. (Is. χ]. 4 Alex.; Prov. ii. 20; 1S. xvii. 40; in Grk. writ. fr. Hom. down.)
Mounce Concise Greek Dictionary
λεῖος leios 1x
smooth, level, plain, Lk. 3:5*
Abbott-Smith Greek Lexicon
λεῖος, -εία, -εῖον,
[in LXX: Ge 27:11, I Ki 17:40 R (חָלָק, חַלּוּק); ὁδὸς λ., Is 40:4 Α (בִּקְעָה); Pr 2:20 12:13 26:23*;]
smooth: opp. to τραχύς, Lk 3:5(LXX).†
Moulton & Milligan — Vocabulary of the Greek NT
λεῖος. BGU III. 7811-15 (,4.}.} ἄλλα λεῖα (‘‘unengraved ”) πυθμένια, 2. I. 162° (ii/iii A.p.) ἄλλο (πλάτυμμα) ἃ ὁμοίως Χρυσοῦν μεικρὸν λεῖον χωρὶς θ]εοῦ, Michel 83337 (B.c. 279) φιάλαι χρυσαῖ λεῖαι ἑπτά. Actos <* hetFos shows kinship with the Lat. /zvés, which is similarly used of ‘‘ unchased ” silver, e.g. Juv. Sat. xiv, 62.
Liddell-Scott-Jones — Greek-English Lexicon
λεῖος (leios) — smooth. λεῖος, α, ον, smooth to the touch, [αἴγειρος] [Refs 8th c.BC+]; χῆμαι, χηραμβίς, [Refs 3rd c.BC+], [Refs 5th c.BC+]; also, of cloths, smooth, plain, not embroidered, ὑφαντά τε καὶ λ. [Refs 5th c.BC+]; λεῖα ἐκπεποιημένα worked smooth, of marble, [Refs] unsculptured, Ἀθήνης ἕδος [Refs 3rd c.BC+]; of plate, unembossed, φιάλαι [Refs 3rd c.BC+]
2. in [Refs 8th c.BC+], chiefly of level places or countries, λεῖος δ᾽ ἱππόδρομος ἀμφίς [Refs 8th c.BC+]; ἐν λείῳ πεδίῳ[Refs 8th c.BC+]; λ. ἄροσις [Refs 8th c.BC+]; λεῖα δ᾽ ἐποίησεν made a smooth place, [Refs 8th c.BC+]; λ. θάλασσα a smooth sea, [Refs 5th c.BC+]; λ. βάσεις flat feet, [Refs 2nd c.AD+]
2. b with genitive, χῶρος.. λεῖος πετράων smooth (i.e. free) from rocks, [Refs 8th c.BC+]
3. smoothskinned, without hair, of animals, [LXX+4th c.BC+]; especially of youths, smooth-chinned, beardless (compare λείαξ), [Refs 3rd c.BC+]; also, of fish, smooth, ἱππίδια [Refs 5th c.BC+]; opposed to λεπιδωτοί, [Refs 4th c.BC+]; [γαλεός] the smooth shark, Mustelus laevis,[Refs 5th c.BC+]; λείη ὑπόστασις a smooth or uniform sediment, [Refs 2nd c.AD+]
4. metaphorically, smooth, soft, πνεῦμα [Refs 5th c.BC+]; of the sound of the voice, [Refs 5th c.BC+]; of the taste, [Refs 5th c.BC+]; [τὸ] ἥμερόν τε καὶ λ. [τοῦ ἤθους] [Refs 5th c.BC+]; λ. πάθημα, opposed to τραχύ, [Refs 4th c.BC+]; λ. κίνησις, Cyrenaic phrase for ἡδονή, [Refs 1st c.BC+]; ὡς -οτέρου ἐλέους ὑπάρξοντος (sed to be read τελειοτέρου) [Refs 2nd c.BC+]; τὸ λ., ={λειότης, τῆς ἑρμηνείας} [Refs 4th c.BC+] adverb λείως smoothly, gently, [Refs 6th c.BC+]
II. rubbed or ground down, [Refs 1st c.AD+], fine sand, [Refs 3rd c.BC+]. (Prob. λειϝος, cf. Latin lēvis.)