(6) Exclamatory adjective.
Saint Mary! what a scene is here!—Scott.
(7) Adverb of degree.
If he has [been in America], he knows what good people are to be found there.—Thackeray.
(8) Conjunction, nearly equivalent to partly... partly, or not only...but.
What with the Maltese goats, who go tinkling by to their pasturage; what with the vocal seller of bread in the early morning;...these sounds are only to be heard...in Pera.—S.S. Cox.
(9) As an exclamation.
What, silent still, and silent all!—Byron.
What, Adam Woodcock at court!—Scott.