What does the cryptic crossword clue "Docs worry a nerd's out of hand with wizard content (15)" mean?

The wordplay uses an anagram. anagram of DOCS + WORRY + A + NERD'S = SWORDANDSORCERY The answer is SWORDANDSORCERY.

Docs worry a nerd's out of hand with wizard content (15)

Independent Cryptic #11778 | 6 Down | 2024-07-10 flower