what is the definition for bimary form in music????????????????????????????

If you truly mean bimary, here are the results I got when I searched in Google:
http://www.google.com/search?q=music+bimary+form&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official

If you made a typo and mean binary, here are the results:
http://www.google.com/search?hl=en&hs=yqR&client=firefox-a&rls=org.mozilla:en-US:official&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=music+binary+form&spell=1

=)