Lexical Definition

‎κυβεία‎ kybeía (koo-bi'-ah) cunning ^G:N-F
from (a "cube", i.e. die for playing)

sleight.

• gambling, i.e. (figuratively) artifice or fraud

Abbott-Smith

* κυβία (Att. -εία, and so Rec.), -ας, ἡ (< κύβος, a cube, a die),
dice-playing; metaph., trickery, sleight: Eph 4:14.†

Abbott-Smith References

Liddell-Scott-Jones

κυβεία, ἡ,

dice-playing, [Refs 5th c.BC+] by the trickery of men, [NT]

_{LSJ Scripture Refs: Eph.4.14}