If you scroll down that page some more
http://dictionary.reference.com/search?q=brother you will also see
1. A male person who has the same father and mother with another person, or who has one of them only. In the latter case he is more definitely called a half brother, or brother of the half blood.
Two of us in the churchyard lie, My sister and my brother. --Wordsworth.
2. One related or closely united to another by some common tie or interest, as of rank, profession, membership in a society, toil, suffering, etc.; -- used among judges, clergymen, monks, physicians, lawyers, professors of religion, etc. ``A brother of your order.'' --Shak.
We few, we happy few, we band of brothers,
For he to-day that sheds his blood with me Shall be my brother. --Shak.
3. One who, or that which, resembles another in distinctive qualities or traits of character.***
He also that is slothful in his work is brother to him that is a great waster. --Prov. xviii. 9.
That April morn Of this the very brother. --Wordsworth.
Note: In Scripture, the term brother is applied to a kinsman by blood more remote than a son of the same parents, as in the case of Abraham and Lot, Jacob and Laban. In a more general sense, brother or brethren is used for fellow-man or fellow-men.
For of whom such massacre Make they but of their brethren, men of men? --Milton.
***Do we not share the same qualities and traits of character???
A Scout is Trustworthy.
A Scout tells the truth. He is honest, and he keeps his promises. People can depend on him.
A Scout is Loyal.
A Scout is true to his family, friends, Scout leaders, school, and nation.
A Scout is Helpful.
A Scout cares about other people. He willingly volunteers to help others without expecting payment or reward.
A Scout is Friendly.
A Scout is a friend to all. He is a brother to other Scouts. He offers his friendship to people of all races and nations, and respects them even if their beliefs and customs are different from his own.
A Scout is Courteous.
A Scout is polite to everyone regardless of age or position. He knows that using good manners makes it easier for people to get along.
A Scout is Kind.
A Scout knows there is strength in being gentle. He treats others as he wants to be treated. Without good reason, he does not harm or kill any living thing.
A Scout is Obedient.
A Scout follows the rules of his family, school, and troop. He obeys the laws of his community and country. If he thinks these rules and laws are unfair, he tries to have them changed in an orderly manner rather than disobeying them.
A Scout is Cheerful.
A Scout looks for the bright side of life. He cheerfully does tasks that come his way. He tries to make others happy.
A Scout is Thrifty.
A Scout works to pay his own way and to help others. He saves for the future. He protects and conserves natural resources. He carefully uses time and property.
A Scout is Brave.
A Scout can face danger although he is afraid. He has the courage to stand for what he thinks is right even if others laugh at him or threaten him.
A Scout is Clean.
A Scout keeps his body and mind fit and clean. He chooses the company of those who live by high standards. He helps keep his home and community clean.
A Scout is Reverent.
A Scout is reverent toward God. He is faithful in his religious duties. He respects the beliefs of others.
I could go on and on about the other definitions of brother on that page, but I will end with this one that I particulary liked
(8.) One beloved or closely united with another in affection
According to dictionary.com
http://dictionary.reference.com/search?q=fraternity A fraternity is
1. A body of people associated for a common purpose or interest, such as a guild.
2. A group of people joined by similar backgrounds, occupations, interests, or tastes: the fraternity of bird watchers.
3. A chiefly social organization of men students at a college or university, usually designated by Greek letters.
4. Roman Catholic Church. A sodality.
5. The quality or condition of being brothers; brotherliness.
Only one of those definitions referred to men...and that was the third one.