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?
The ISBE () International Standard Bible Encyclopedia has a good article on the several words translated as "glory" in English Bibles. It is available online at: http://www.bible-history.com/isbe/G/GLORY/
To have glory is to be of great value and importance. Words implying glory are often figures of speech, with "emphasis ... [on] some external physical characteristic which attracts the attention, and makes the object described by the word significant or prominent".
Glorious things generally have "beauty, majesty and splendor". Glorious men have great power or possessions, and command respect. But glory is preeminently an attribute of God, or of people or things associated with God because of the association.
According to Vine's Expository Dictionary, the Greek word "doxa", most commonly translated as glory, can mean GLORY, DIGNITY, HONOR, PRAISE, or WORSHIP.
All the things you mentioned, with the possible exception of happiness, seem to be part of or representative of glory. Reference books like Vine's and Strong's should be helpful in determining the emphasis of a specific usage.
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.
A man ought not to cover his head, since he is the image and glory of God; but woman is the glory of man (1 Corinthians 11:7). If the man where to conceal his prayer requests to the Spirit, in front of the assembly, by having his wife ask for him. God would be answering the wife who is not in his image. Therefore taking from God his Glory.
καὶ δόξα Θεοῦ
By man doing for his wife he brings Glory(praise, honor, or distinction and thanksgiving) to his wife. And when God does for man it brings God glory. And it takes glory away from God when he gives to the woman through a man that is not the husband.
Also see that the power of choice has been give to the women, because of the angels (1 Corinthians 11:10).
A man praying or prophesying against truth revealed within the assembly causes dishonor, and not glory, because there is to be unity.
Therefore Man receives Glory from Giving Glory to God, by receiving his blessings. And the Wife Receives Glory from her Husband, by receiving God's blessings through her Husband, and also by the covering of glory that she receives from her hair.
That is why it is like shaving the man of his Glory, when the woman reveals the need to the Spirit while in the presence of the Husband. For the needs are not separate from each other (1 Corinthians 11:11). "In this I feel the translations are wrong because of lack of understanding." It is like she has shaved off her own hair, because God's glory being on the woman, was not as good as it being on the man, therefore undoing the glory she receives from having nice hair.