What does the cryptic crossword clue "Area isn’t regenerated well? (8)" mean?

The definition is "Area". The wordplay uses a hidden word. anagram of AREA + ISN’T = ARTESIAN; definition: "well?" The answer is ARTESIAN.

Area isn’t regenerated well? (8)

Independent Cryptic #11926 | 17 Across | 2024-12-30 flower