Flower's bottom part raised, by the sound of it (9)
I believe the answer is:
buttercup
'flower's' is the definition.
(I've seen this before)
'bottom part raised by the sound of it' is the wordplay.
I cannot quite understand how this works, but
'bottom' could be 'butt' (synonyms) and 'butt' is located in the answer.
'raised' could be 'up' (similar in meaning) and 'up' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for buttercup that I've seen before include "Meadow flower poisonous to cattle" , "growth in the field" , "Dockside seller" , "Common grassland plant, poisonous to livestock" , "Common yellow flower" .)