What does the cryptic crossword clue "1,000,000 donkeys – that’s loads … (6)" mean?

The wordplay uses a charade (building blocks). M (synonym="million") + ASSES (synonym=""donkeys"") = MASSES The answer is MASSES.

1,000,000 donkeys – that’s loads … (6)

Guardian Cryptic #29604 | 5 Down | 2025-01-29 flower