Quick Definition
ἐνέδρα, ας, ἡ n.f. an ambush, plot, treachery, fraud
Strong's Definition
an ambuscade, i.e. (figuratively) murderous purpose
Derivation: feminine from G1722 (ἐν) and the base of G1476 (ἑδραῖος);
KJV Usage: lay wait
Thayer's Greek Lexicon
ἐν-έδρα, -as, 7, (fr. ἐν and ἕδρα a seat), a lying in wait, ambush: Acts xxiii. 16 [Rec τὸ ἔνεδρον, q. v-]; ἐνέδραν ποιεῖν, Acts xxv. 3. (Sept.; Thuc., 544.)
Mounce Concise Greek Dictionary
ἐνέδρα enedra 2x
pr. a sitting in or on a spot; an ambush, or lying in wait, Acts 23:16; 25:3*
Abbott-Smith Greek Lexicon
ἐν-έδρα, -ας, ἡ
(< ἕδρα, a seat), [in LXX: Jos 8:7, 9, Ps 10:8 (אָרַב)* ;]
a lying in wait, an ambush: Ac 23:16 (Rec. ἔνεδρον, a form freq. in LXX), Ac 25:3.†
Moulton & Milligan — Vocabulary of the Greek NT
ἐνέδρα. The derived meaning of ‘‘treachery,” ‘‘ fraud,” is illustrated by P Oxy I. 621° (iii/a.D.) ἵνα μὴ ἐκ τῆς σῆς ἀμελείας ἐνέδρα περὶ τὴν ἐμβολὴν γένηται, ‘in order that there may be no fraud in the lading through any neglect of yours” (Edd.): cf. 75, XII. 1428° (iv/a.D.) ὑπ]ὲρ τοῦ τοίνυν μὴ ἐνέδραν ἐπακολουθῆσαι, ‘so as to prevent any deception from ensuing,” 76. 1455!% (A.D. 275) εἰς τὸ μηδεμί[α]ν évéSp[av] ἐπακολ[ουθεῖῖῖν. For the form ἐνεδρεία cf. the endorsement of a petition to the logistes—éveSpelas yeyewnμένης, “concerning a case of fraud” (P Oxy VI. g00!*—a.p. 322).
Liddell-Scott-Jones — Greek-English Lexicon
ἐνέδρα (enedra) — plot/ambush. ἐνέδρ-α, ἡ, sitting in: hence, lying in wait, ambush, [Refs 5th c.BC+]; ἐκ τῆς ἐ. ἀνίστασθαι[Refs 5th c.BC+] __b men laid in ambush, τὴν ἐ. ἐζανιστάναι [Refs 5th c.BC+]
2. metaphorically, trickery, treachery, δόλου καὶ ἐνέδρας πλήρης [Refs 5th c.BC+]; ἐξ ἐνέδρας, opposed to φανερῶς, [Refs 1st c.AD+]
II. position, ναρθήκων [Refs 5th c.BC+]
III. delay, περί τι [Refs 3rd c.AD+]