In a while, the weed got entwined with the plant (9)
I believe the answer is:
speedwell
'plant' is the definition.
(speedwell is a kind of plant)
'in a while the weed got entwined' is the wordplay.
I cannot quite see how this works, but
an anagram of 'weed' is 'eedw' which is present in the answer.
'while' could be 'spell' (I've seen this in another clue) and 'spell' is found in the leftover letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'with the' acts as a link.
Can you help me to learn more?
(Other definitions for speedwell that I've seen before include "Flowering plant" , "bloomer?" , "Small plant, veronica" , "Small creeping herbaceous plant with blue or pink flowers" , "Small blue flower of the genus veronica" .)