Tertullus

Boyd’s Bible Dictionary:

(little third). A Roman lawyer or orator hired by the high priest and Sanhedrim to prosecute Paul before the procurator Felix (Acts 24:1-9).

Concise Bible Dictionary:

A professional orator or advocate, employed by the Jewish council, to argue the case against Paul before Felix (Acts 24:1-2).

Strong’s Dictionary of Greek Words:

Greek:
Τέρτυλλος
Transliteration:
Tertullos
Phonic:
ter’-tool-los
Meaning:
of uncertain derivation; Tertullus, a Roman
KJV Usage:
Tertullus

Jackson’s Dictionary of Scripture Proper Names:

triple-hardened

Potts’ Bible Proper Names:

A liar; an impostor:―Roman lawyer hired to prosecute Paul, Acts 24:1. {Mendaciloquus}