Strong's Greek Concordance

G1749: ἔνεδρον

énedron · “hinderance”

Definition

an ambush, i.e. (figuratively) murderous design

KJV translates it as: lying in wait

Word origin: neuter of the same as G1747 (ἐνέδρα);

Extended definition

ἔνεδρον, -ου, τό, see: ἐνέδρα.
ἐν-έδρα, -ας, ἡ
(ἕδρα, a seat), [in LXX: Jos.8:7-9, Psa.10:8 (אָרַב)* ;]
a lying in wait, an ambush: Act.23:16 (Rec. ἔνεδρον, a form frequently in LXX), Act.25:8.†
(AS)

Abbott-Smith Manual Greek Lexicon (1922) via STEPBible TBESG (CC BY 4.0).