It reminds me twice not to wobble (7)
I believe the answer is:
memento
'it reminds' is the definition.
The definition suggests a singular noun which matches the answer.
'me twice not to wobble' is the wordplay.
'twice' shows that letters should be duplicated.
'to wobble' indicates an anagram (letters wobble around).
'me' doubled is 'meme'.
'not' with letters rearranged gives 'nto'.
'meme'+'nto'='MEMENTO'
Can you help me to learn more?
(Other definitions for memento that I've seen before include "Reminder that death is inevitable" , "Souvenir, reminder of past event" , "might be kept for sentimental reasons" , "Object kept as a souvenir" , "Souvenir, something to remember by" .)