I've compiled a list of words that I think sound silly.  I've got
about 215 of them right now.  I'd like to post them on a web site and
include definitions.  This would just be for fun, not for profit.  And
there would be no ads on the page.

Would it be legal to reproduce dictionary definitions for this number
of words?  It would probably be from at least 2 sources, which I would
be sure to cite.  I could put the definitions in quotes too.  I guess
this is a copyright issue.  Thanks.

I suggest that, to be safe, you re-word the definitions, as has been
done by the author of this collection of "Unusual and Weird Words":

"I have used a variety of dictionaries in compiling the IHL, though I
have not simply copied out dictionary definitions."

http://phrontistery.50megs.com/ihlstart.html