What does the cryptic crossword clue "Using winch as a cranky tool (8)" mean?

The definition is "tool". The wordplay uses an anagram. anagram of WINCH + AS + A = CHAINSAW; definition: "cranky tool" The answer is CHAINSAW.

Using winch as a cranky tool (8)

Guardian Cryptic #27904 | 3 Down | 2019-08-20 flower