It is a name of Hebrew origin and is used interchangeably by men and women. There are variants like Jacolm. Jacol. Yacol, Yeidckol and Jeicol. It means "god's call." God cries for me, called by God.
It means true love and friendship is a name that only special persons have and says that in the future people with that name will be called by God.
In Internet I found yeidckol which in Hebrew means "God's call".