Nicolaitane; Nicolaitans

Concise Bible Dictionary:

The designation of some sect whose deeds and doctrines are condemned without being specified (Rev. 2:6,156But this thou hast, that thou hatest the deeds of the Nicolaitans, which I also hate. (Revelation 2:6)
15So hast thou also them that hold the doctrine of the Nicolaitans, which thing I hate. (Revelation 2:15)). Many suggestions have been made as to the tenets of the Nicolaitanes, but nothing is known with certainty. As their “doctrine” and their “deeds” are referred to, both of which Christ “hated,” it has been thought they were libertines.

Strong’s Dictionary of Greek Words:

Number:
3531 (find all occurrences in KJV Bible)
Greek:
Νικολαΐτης
Transliteration:
Nikolaites
Phonic:
nik-ol-ah-ee’-tace
Meaning:
from 3532; a Nicolaite, i.e. adherent of Nicolaus
KJV Usage:
Nicolaitane

Jackson’s Dictionary of Scripture Proper Names:

conqueror of (what is of) the people

Potts’ Bible Proper Names:

Conqueror of the people; submission of the people:―an heretical sect [NICOLAS], Rev. 2:6. {Victor populi}