Source : Webster's Revised Unabridged Dictionary (1913)
But what is used for but that, usually after a negative, and
excludes everything contrary to the assertion in the following
sentence. ``Her needle is not so absolutely perfect in tent and
cross stitch but what my superintendence is advisable.'' --Sir
W. Scott. ``Never fear but what our kite shall fly as high.''
--Ld. Lytton.
{What ho!} an exclamation of calling.
{What if}, what will it matter if; what will happen or be the
result if. ``What if it be a poison?'' --Shak.
{What of this}? {that?} {it?} etc., what follows from this,
that, it, etc., often with the implication that it is of
no consequence. ``All this is so; but what of this, my
lord?'' --Shak. ``The night is spent, why, what of that?''
--Shak.
{What though}, even granting that; allowing that; supposing
it true that. ``What though the rose have prickles, yet't
is plucked.'' --Shak.
{What time}, or {What time as}, when. [Obs. or Archaic]
``What time I am afraid, I will trust in thee.'' --Ps.
lvi. 3.
What time the morn mysterious visions brings.
--Pope.