What does the cryptic crossword clue "A lot of cane turned into a cot (4)" mean?

The definition is "cot". The wordplay uses a reversal. BIRC (reversal="a lot of") = CRIB; definition: "cot" The answer is CRIB.

A lot of cane turned into a cot (4)

Guardian Cryptic #29018 | 15 Across | 2023-03-15 flower