Onesimus

Boyd’s Bible Dictionary:

(useful). Slave of Philemon, at Colosse, in whose behalf Paul wrote the epistle to Philemon (Col. 4:9; Philem. 1:10,15).

Concise Bible Dictionary:

Slave of Philemon, converted when with Paul, and sent back to his master not simply as a servant, but as “a brother beloved” (Col. 4:9; Philem. 1:10). Christianity did not come in to set the world right thus: Onesimus was sent back to his master, and slaves are elsewhere exhorted to be faithful to their masters; but slavery is doubtless one of the fruits of man’s sin.

Strong’s Dictionary of Greek Words:

Greek:
Ὀνήσιμος
Transliteration:
Onesimos
Phonic:
on-ay’-sim-os
Meaning:
from 3685; profitable; Onesimus, a Christian
KJV Usage:
Onesimus

Jackson’s Dictionary of Scripture Proper Names:

profitable

Potts’ Bible Proper Names:

Useful; profitable:―slave or servant of Philemon, Philem. 1:10. {Utilis}