I don't go by lexicon's, they are biased because of the denomination of the people giving the meanings.
I go by the scriptures.
God's breath gives us our own spirit, and then we become alive and breath.
Ok, firstly, when you say you go by Scripture, you're really saying you go by your understanding of Scripture. We all do. The Scriptures don't speak. What's interesting is that if you're reading the Scriptures in English you are going by someone's interpretation. If you accept their interpretation on what basis do you reject their definitions?
But, let's look at the Scriptures.
And the LORD God formed man of the dust of the ground, and breathed into his nostrils the
breath of life; and man became a living soul. (Gen. 2:7 KJV)
In the above passage the word translated breath is the Hebrew word Neshamah. It's used in the breath of life.
And, behold, I, even I, do bring a flood of waters upon the earth, to destroy all flesh, wherein is the
breath of life, from under heaven; and every thing that is in the earth shall die. (Gen. 6:17 KJV)
In this passage also using the phrase, "breath of life" the Hebrew word translated breath is Ruach.
And the earth was without form, and void; and darkness was upon the face of the deep. And the
Spirit of God moved upon the face of the waters.
(Gen. 1:2 KJV)
In this passage the Hebrew word translated "Spirit" is also Ruach.
What we find in Scripture is that God's breath of life gives man life and the ability to reason. That breath returns to God at death and man returns to the dust. The breath or spirit is not man. It is God's breath in man.