Irrigate grounds to keep dry? (10)
I believe the answer is:
waterproof
'keep dry?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'irrigate grounds' is the wordplay.
'irrigate' becomes 'water' (synonyms).
'grounds' becomes 'proof' (proof is a kind of grounds).
'water'+'proof'='WATERPROOF'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for waterproof that I've seen before include "Mac" , "Impervious to rain" , "Protective garment" , "Impermeable" , "Rain-resistant" .)