I would like to know more about the (supposed) difference between dictionary and philosophical definitions. There is a free access introduction by Norman Swartz on the Internet. Swartz says that dictionary definitions are "reports of common usages". My problem is that dictionaries (try to) explain what words MEAN in common usages. Even if you accept that there is not more to meaning than usage itself, dictionaries seem to report THEIR UNDERSTANDING of usage, which is something quite different from usage. For instance, when dictionaries quote writers who used some word, they never give information on how READERS reacted to that usage. I think that they assume that those quotations somehow prove by themselves the accuracy of the proposed definitions. On the other side, I suppose that philosophers also rely on usage when they try to define the meaning of a term (if they are not stipulating it). Aren't philosophers reporting their (or arguing for a certain) understanding of a word usage?