Lexical Definition

‎εὐθύνω‎ euthýnō (yoo-thoo'-no) to straighten ^G:V
from ‎εὐθύς‎

governor, make straight.

• to straighten (level)
• technically, to steer

Abbott-Smith

εὐθύνω (< εὐθύς), [in LXX: Nu 22:23, Jos 24:23 (נָטָה hi.), Jg 14:7, I Ki 18:20, 26 (יָשַׁר) Pr 20:24, Si 2:2, 6, al. ;]
1. to direct: Ja 3:4.
2. to make straight: Jo 1:23 (LXX, ἑτοιμάσατε).†

Abbott-Smith References

Liddell-Scott-Jones

εὐθύνω-ω,

(εὐθύς) = the Homeric ἰθύνω (which is a frequently variant, as in [Refs 4th c.BC+]: — guide straight, direct, οἰωνὸν γνώμῃ στομίων ἄτερ εὐθύνων [Refs 5th c.BC+]; [ἅρματα] [Refs 5th c.BC+]; εὐ. δόρυ steer the bark straight, [Refs 5th c.BC+]the helmsman, [NT]; εὐ. ἀγέλας lead or drive them, [Refs 5th c.BC+]; εὐ. χερσί manage, guide him, [Refs 5th c.BC+]

__2 metaphorically, direct, govern, Κύρου δὲ παῖς.. ηὔθυνε στρατόν [Refs 5th c.BC+]
__3 make straight, straighten, opposed to κάμπτειν, πτέρυγας [Refs 4th c.BC+]:— passive, [Refs]
__II make or put straight, εὐ. δίκας σκολιάς make crooked judgements straight, [Refs 6th c.BC+]; εὐ. οὖρον send a straight fair wind, [Refs 5th c.BC+]
__III examine the conduct of an official, [Refs 4th c.BC+]:—passive, with genitive, - όμενος τῆς ἐφορείας [Refs]
__III.2 with genitive criminis, call to account for.., τινα κλοπῆς [Refs 1st c.AD+] —passive, τῶν ἀδικημάτων ηὐθύνθη [Refs 5th c.BC+]; οἱ -όμενοι the culprits, Mitteis [Refs 2nd c.BC+]: with dative, εὐ. φόνῳ [Refs 2nd c.BC+]; to be mulcted, punished, ἐπί τινι [Refs 2nd c.AD+]
__III.3 generally, refute or censure, τοὺς λόγους τινός [Refs 1st c.BC+]:—passive, to be refuted, δι᾽ αὐτῶν τῶν φαινομένων [Refs 1st c.BC+]; but also, to be critically examined, [Refs]
__III.4 examine by torture, [Refs 6th c.AD+]
__IV intransitive, serve as εὔθυνος, [Refs 5th c.BC+]

_{LSJ Scripture Refs: Jas.3.4}