What does the cryptic crossword clue "A groan after spilling natural fabric (6)" mean?

The definition is "fabric". The wordplay uses an anagram. anagram of A + GROAN = ANGORA; definition: "fabric" The answer is ANGORA.

A groan after spilling natural fabric (6)

Daily Mail Cryptic #17193 | 9 Across | 2023-09-26 flower