Notice a wild flower (7)
I believe the answer is:
aconite
'flower' is the definition.
(I've seen this before)
'notice a wild' is the wordplay.
'wild' indicates an anagram.
'notice'+'a'='noticea'
'noticea' with letters rearranged gives 'ACONITE'.
(Other definitions for aconite that I've seen before include "Yellow-flowered plant" , "potential killer" , "Spring flower - poison" , "Flower, for example monkshood or wolfsbane" , "Poisonous flowering plant" .)