What does the cryptic crossword clue "Bottom pinched by flipping horrid antifeminist (5)" mean?

The definition is "Bottom". The wordplay uses a hidden word. Hidden reversed in "bottom pinched by flipping horRID ANtifeminist" The answer is NADIR.

Bottom pinched by flipping horrid antifeminist (5)

Guardian Cryptic #29067 | 8 Down | 2023-05-11 flower