Part of iceberg visible in dump? (3)
I believe the answer is:
tip
This could be a double definition.
'part of iceberg' is the first definition.
'tip' can be an answer for 'part' (tip is a kind of part). I'm not certain of the 'of iceberg' bit.
'dump?' is the second definition.
(as in a rubbish tip)
'visible in' acts as a link.
Can you help me to learn more?
(Other definitions for tip that I've seen before include "Clue" , "Pointed end" , "Warning" , "Hint or dumping ground" , "Useful hint; end" .)