It means to treat, frequent, rub shoulders. It also means to warn, to know, to know, to realize, to intuit.
Meaning of Knowing: The act of knowing involves sequences of integrated brain processes that begin with the messages that form the external environment or objective world activating the organs of the senses and inducing the interpretation of oneself, as an integral part of the reality of the world of objects. They are the experiences of circumstances that determine the dynamics of the past and provide ideal tools to project and prospectively program probable futures.