Want to have bottom wiped — something sticky! (3)
I believe the answer is:
lac
'something sticky' is the definition.
I can't judge whether this definition defines the answer.
'want to have bottom wiped' is the wordplay.
'want' becomes 'lack' (synonyms).
'to have bottom wiped' means to remove the last letter (the letter at the bottom of the word is removed).
'lack' with its final letter taken away is 'LAC'.
Can you help me to learn more?
(Other definitions for lac that I've seen before include "Insect-produced resin" , "Dark red resin - "Hotel du ___" (Anita Brookner)" , "Resinous material" , "Resinous insect secretion" , "Resinous substance used in varnish" .)