only (begotten, child)

Concise Bible Dictionary:

1. From γεμμάω, “to beget.” This word is used
a) for the natural generation of mankind, as in Matthew 1.

Strong’s Dictionary of Greek Words:

Greek:
μονογενής
Transliteration:
monogenes
Phonic:
mon-og-en-ace’
Meaning:
from 3441 and 1096; only-born, i.e. sole
KJV Usage:
only (begotten, child)