What does the cryptic crossword clue "Fat blokes concealed signs of what’s to come (5)" mean?

The wordplay uses a hidden word. MEN (synonym="blokes/fellows") in OS (synonym="abbrev. for “outsize”/large/fat") = OMENS The answer is OMENS.

Fat blokes concealed signs of what’s to come (5)

Guardian Cryptic #29611 | 9 Across | 2025-02-06 flower