Noun acquaintance has 3 senses
  1. acquaintance, familiarity, conversance, conversancy - personal knowledge or information about someone or something
    --1 is a kind of information
    Derived form: verb acquaint1
  2. acquaintance, acquaintanceship - a relationship less intimate than friendship
    --2 is a kind of relationship
  3. acquaintance, friend - a person with whom you are acquainted; "I have trouble remembering the names of all my acquaintances"; "we are friends of the family"
    --3 is a kind of person, individual, someone, somebody, mortal, human, soul
    --3 has particulars:
     bunkmate; campmate; connection; end man; homeboy; messmate; pickup; schoolmate, classmate, schoolfellow, class fellow