remove line type?

hi,
  we're looking at migrating from ORACLE to postgres in the
very near future and we've run into a small problem.  there's
a data type defined "LINE".  we have named one of our tables 
as "LINE" also and it would require a great deal of code 
changes to rename that table.  is it possible to simply
"turn off" the line type?  any help is appreciated.

thanks,
   mikeo