Large basin for a plant that needs watering? (3,4)
I believe the answer is:
dry dock
'large basin' is the definition.
'dry dock' can be an answer for 'basin' (thesaurus). I am unsure of the 'large' bit.
'a plant that needs watering?' is the wordplay.
I cannot quite see how this works, but
'plant' could be 'dock' (dock is a kind of plant) and 'dock' is present in the answer.
The remaining letters 'dry' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for dry dock that I've seen before include "Ship repair area" , "naval repair facility" , "Waterless harbour used for building or repairing ships" , "where a liner may be built" , "Place for hull repairs" .)