What does the cryptic crossword clue "Climbers might use this hole Dot created (7)" mean?

The definition is "Climbers". The wordplay uses an anagram. anagram of HOLE + DOT = TOEHOLD; definition: "Climbers" The answer is TOEHOLD.

Climbers might use this hole Dot created (7)

Daily Mail Cryptic #17039 | 21 Down | 2023-02-22 flower