What does the cryptic crossword clue "Tiny slant is corrected at once (9)" mean?

The definition is "at once". The wordplay uses an anagram. anagram of TINY + SLANT = INSTANTLY; definition: "at once" The answer is INSTANTLY.

Tiny slant is corrected at once (9)

Daily Mail Cryptic #17510 | 14 Across | 2024-12-13 flower