[1] : The Collaborative International Dictionary of English v.0.48

while \while\, conj.
   1. during the time that; as long as; whilst; at the same time
      that; as, while i write, you sleep. "while i have time and
      space." --chaucer.
      1913 webster

            use your memory; you will sensibly experience a
            gradual improvement, while you take care not to
            overload it.                          --i. watts.
      1913 webster

   2. hence, under which circumstances; in which case; though;
      whereas.
      1913 webster

   while as, while that, during or at the time that. obs.
      1913 webster
see also:
while as while that 

While >> W Words
While, definition of term: While
while_pag1.html

That >> T Words
That, definition of term: That
that_pag1.html

That Is >> T Words
That Is, definition of term: That Is
that+is_pag1.html

Worth While >> W Words
Worth While, definition of term: Worth While
worth+while_pag1.html

Such That >> S Words
Such That, definition of term: Such That
such+that_pag1.html

In That >> I Words
In That, definition of term: In That
in+that_pag1.html

So That >> S Words
So That, definition of term: So That
so+that_pag1.html

All That >> A Words
All That, definition of term: All That
all+that_pag1.html

Once In A While >> O Words
Once In A While, definition of term: Once In A While
once+in+a+while_pag1.html