1.make reference to;
His name was mentioned in connection with the invention
2.have to do with or be relevant to;
There were lots of questions referring to her talk
3.think of, regard, or classify under a subsuming principle or with a general group or in relation to another;
This plant can be referred to a known species
4.send or direct for treatment, information, or a decision;
refer a patient to a specialist
5.seek information from;
You should consult the dictionary
6.have as a meaning;
`multi-' denotes `many'