What does the word Glory mean in the Bible? Does it mean Might, majesty, light, happiness or power? Or all those things ( in which case, how to tell what context it's being used in?
Have you ever used Strong's Concordance with Hebrew and Greek? I often come here with questions on the meanings of words.

Paul said that man is the image and glory of God, and that woman is the glory of the man; also that the man is not without the woman, neither the woman without the man in the Lord. -- Man as we know was created first. Jehovah was asked if it was good for man to be alone, "No" he replied. So He and God created woman. Man was created after God's image, Woman was created after Man's image. 

Here is what glory means in 1 Cor 11:7 according to this site. Out of the definitions I am not sure which one fits the best.

Take a look, use Strong's Concordance, it is a wonderful tool.  It is for both Greek and Hebrew.