Illegible handwriting beginning from squiggly stroke (6)
I believe the answer is:
scrawl
'illegible handwriting' is the definition.
(I've seen this before)
'squiggly stroke' is the wordplay.
'squiggly' becomes 's' (this could be a standard abbreviation which I don't know about).
'stroke' becomes 'crawl' (crawl is a kind of stroke).
's'+'crawl'='SCRAWL'
'beginning from' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for scrawl that I've seen before include "Long, maybe illegible, piece of writing" , "careless writing" , "Scribble" , "Illegible hand" , "write hurriedly" .)