Type of pencil whose tip is used in treating a cyst (7)
I believe the answer is:
styptic
'type of pencil' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'tip is used in treating a cyst' is the wordplay.
'is used' is an anagram indicator.
'in' means one lot of letters goes inside another.
'treating' is an anagram indicator.
'tip' anagrammed gives 'pti'.
'cyst' anagrammed gives 'styc'.
'pti' going within 'styc' is 'STYPTIC'.
'whose' is the link.
Can you help me to learn more?
(Other definitions for styptic that I've seen before include "This pencil checks bleeding as from shaving" , "Checking blood flow like shaving pencil" , "Stopping bleeding" .)