The Biblical definition of a soul is simply a breathing body. Notice that the text does not say that man was given a soul, but rather he became a soul. A soul is not something a person has, it is the person. Souls have blood (Jeremiah 2:34). Not only are people souls, but so are fish and animals (Revelation 16:3).
The Hebrew word for soul, nephesh, is variously translated "person" (Genesis 14:21), "self" (Leviticus 11:43), "life" (Psalm 31:13), "me" (Judges 16:30), "creature" (Genesis 1:21), "beast" (Leviticus 24:18), "man" (2 Kings 12:4), "thing" (Ezekiel 47:9), and "fish" (Isaiah 19:10). When translated "body" the nephesh is usually dead (Leviticus 21:11).
What was the worst thing you ever saw a teacher do to a student?
[PS] MissAnthropy thumbs up for this thread. This is a fun one. Thank you for starting it