Crossword Genius

High part of a memorial obelisk (3)

Ross

I believe the answer is:

lob

I'm a little stuck... Click here to teach me about this clue!

Here is my best explanation:

'high part' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'of a memorial obelisk' is the wordplay.
'of' says the answer is hidden in the clue.
'LOB' can be found hidden inside 'memorial obelisk'.

Can you help me to learn more?

This clue was last seen in Evening Standard