What does the cryptic crossword clue "Gesture a host made to dispute a decision? (5,3,4)" mean?

The wordplay uses an anagram. anagram of GESTURE + A + HOST = ARGUETHETOSS The answer is ARGUETHETOSS.

Gesture a host made to dispute a decision? (5,3,4)

Daily Mail Cryptic #17426 | 10 Down | 2024-08-19 flower