What does the cryptic crossword clue "Wild horse we'd got clean (8)" mean?

The definition is "clean". The wordplay uses an anagram. anagram of HORSE + WE'D = SHOWERED; definition: "clean" The answer is SHOWERED.

Wild horse we'd got clean (8)

Daily Mail Cryptic #17024 | 31 Across | 2023-02-01 flower