Lexical Definition

‎ἄκρον‎ ákron (ak'-ron) end ^G:N-N
neuter of an adjective probably akin to the base of ‎ἀκμήν‎

one end… other, tip, top, uttermost participle

• the extremity

Abbott-Smith

ἄκρος, -α, -ον [in LXX for קֶצַח, בֹּהֶן, etc.;]
highest, extreme; as subst., τὸ ἄ., the top, extremity: Mk 13:27, Lk 16:24, He 11:21; pl. (cf. MM, VGT, s.v.), Mt 24:31.†

Abbott-Smith References

Liddell-Scott-Jones

ἄκρον, ου, τό,

(neuter of ἄκρος) like{ἄκρα}, highest or farthest point:

__1 mountain top, peak, Γάργαρον ἄκρον Ἴδης[ἄκρον ὑπερβαλέειν 8th c.BC: Odyssea Homerus Epicus “Odyssey” 11.597">Refs 8th c.BC+]; τὰ ἄκρα heights, [Refs 5th c.BC+]
__1.b ἄκρα νάων ships' tops, [Refs 7th c.BC+]
__2 headland, cape, Σούνιον ἄκρον Ἀθηνέων[Refs 8th c.BC+]
__3 end, extremity, τὰ ἄ. τῆς θαλάσσης, [τοῦἀέρος], [Refs 5th c.BC+]; ἄκρα χειρῶν hands, [Refs 2nd c.AD+]; ἐξ ἄκρων at the end, [Refs 5th c.BC+]:—border, frontier, [Refs 2nd c.BC+]
__II metaphorically, highest pitch, height, πανδοξίας ἄκρον[Refs 5th c.BC+]; εἰς ἄκρον ἀνδρείας ἱκέσθαι to highest pitch, [Refs 4th c.BC+]; εἰς ἄκρον ἁδύς exceedingly, [Refs 3rd c.BC+]; ἐπ᾽ ἄκρον ἀφικέσθαι, ἐλθεῖν, [ἄκρον ἔχων σοφίης “epigram Gr.” 442 (from Nabataea)">Refs 5th c.BC+]; ἄκρον ἐρώτων εἰδότος, ἄκρα μάχας[Refs 1st c.AD+] —ἄκρα, τά, heights, highest point, οὔτοι ποθ᾽ ἥξει (sic) τῶν ἄκρων ἄνευ πόνου[Refs 5th c.BC+]; ἄκρα φέρεσθαι win prize, [Refs 3rd c.BC+]
__II.2 of persons, Ἄργεος ἄκρα Πελασγοί pride of Argos, [Refs 3rd c.BC+]
__III δρυὸς ἄκρα, ={ἀκρόδρυα}, [Refs]
__IV in Logic of [Refs 4th c.BC+] are major and minor terms of syllogism, opposed to to μέσον or middle, [Refs]
__V extremes in a proportion, [Refs]