means,

The only one; the only born.
Conceived by the overshadowing of Mary by the Holy Spirit, the virgin bith of Jesus Christ is the greatest miracle known to mankind. Through this miracle, Jesus came to earth and God became both God and man, a perfect sinless man. In this way, God gave us His ony begotten Son who had been with Him from eternity.

And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
John 1:14

Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.
Isaiah 7:14


Emmanuel
(or, Immanuel)
means, 'God with us'