You once brought inside garden watering pipe — here? (8)
I believe the answer is:
hothouse
'pipe here?' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'you once brought inside garden watering' is the wordplay.
'you once' becomes 'thou' (historical second person pronoun).
'brought inside' means one lot of letters goes inside another.
'garden watering' becomes 'hose' (I can't explain this - if you can you should believe this answer much more).
'thou' inserted into 'hose' is 'HOTHOUSE'.
Can you help me to learn more?
(Other definitions for hothouse that I've seen before include "Environment encouraging rapid growth" , "Warm environment for plants" , "pressurised environment" , "part of garden" , "Environment aiding rapid growth or development" .)