Important person greeting boring old queen (6)
I believe the answer is:
anyone
'important person' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'greeting boring old queen' is the wordplay.
'greeting' becomes 'yo'.
'boring' indicates putting letters inside (some letters must 'bore' a hole into other letters).
'old queen' becomes 'Anne' (Queen Anne, 18th-century queen).
'yo' put into 'anne' is 'ANYONE'.
Can you help me to learn more?
(Other definitions for anyone that I've seen before include "A random person" , "A person in general" , "Whosoever" , "Pick a person - doesn't matter who" , "Anybody at all" .)