acquaintance

n. familiarity; knowledge, awareness; person one knows slightly

In the contexts of sociology and of popular culture, the concept of interpersonal relationships involves social associations, connections, or affiliations between two or more people. Such persons may  interact overtly, covertly, face-to-face; or may remain effectively unknown to each other (as in a virtual community whose members maintain anonymity and do not socialize outside of a  chat-room).
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Noun
1. personal knowledge or information about someone or something
(synonym) familiarity, conversance, conversancy
(hypernym) information
(derivation) introduce, present, acquaint
2. a relationship less intimate than friendship
(synonym) acquaintanceship
(hypernym) relationship
3. a person with whom you are acquainted; "I have trouble remembering the names of all my acquaintances"; "we are friends of the family"
(synonym) friend
(hypernym) person, individual, someone, somebody, mortal, human, soul
(hyponym) bunkmate

(n.)
A state of being acquainted, or of having intimate, or more than slight or superficial, knowledge; personal knowledge gained by intercourse short of that of friendship or intimacy; as, I know the man; but have no acquaintance with him.
  

(n.)
A person or persons with whom one is acquainted.
  

To meet an acquaintance, and converse pleasantly with him, foretells that your business will run smoothly, and there will be but little discord in your domestic affairs.

If you seem to be disputing, or engaged in loud talk, humiliations and embarrassments will whirl seethingly around you.

If you feel ashamed of meeting an acquaintance, or meet him at an inopportune time, it denotes that you will be guilty of illicitly conducting yourself, and other parties will let the secret out.

For a young woman to think that she has an extensive acquaintance, signifies that she will be the possessor of vast interests, and her love will be worthy the winning. If her circle of acquaintances is small, she will be unlucky in gaining social favors.

After dreaming of acquaintances, you may see or hear from them.