That part of software testing that requires operator input, 
analysis, or evaluation. Manual testing requires a tester 
to perform manual test operations on the test software 
without the help of Test automation. In other words manual 
testing is the one in which a person has do it himself /
personally check whether everything is right or not with 
certain inputs to machine .

By doing manual testing one will come to know the defects 
and faults in the application.so that the development team 
will be able to fix the bugs and the a good product can be 
delivered to the customer

Testing Done manually ie without the help of any automation
tools like Loadrunner,Winrunner,QTP ,Testdirector etc.

it is necessary to test any application at least ones manually
here what happened basically that a person will give the
Input,the execute the process or give the command and then
decided weather it is giving the right output or not.

It is a process in which all the phases of s/w testing life 
cycle like test plannig,test development,test 
execution,result analysis,bug tracking&reporting are 
accomplished successfully with human effects
   among all the ans this will be the best bcos in 
interview if u say this ans interviwer would that about u 
for giving job,bos in this defenition all the testing 
process is covered