Crossword Genius

Vessel caught by reef, lower potentially (9)

Ross

I believe the answer is:

flowerpot

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

'vessel' 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?

'caught by reef lower potentially' is the wordplay.
'caught by' indicates a hidden word.
'FLOWERPOT' can be found hidden inside 'reef lower potentially'.

Can you help me to learn more?

(Other definitions for flowerpot that I've seen before include "Plant container" , "aid for gardeners" , "spotted on window-sill" , "Geranium holder?" , "Place for growing" .)

I've seen this clue in The Telegraph.
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