What does the cryptic crossword clue "Monstrous woman inside gets the nod (6)" mean?

The definition is "Monstrous woman". The wordplay uses a hidden word. Hidden in "monstrous woman inside getS THE NOd" The answer is STHENO.

Monstrous woman inside gets the nod (6)

Guardian Cryptic #29060 | 2 Down | 2023-05-03 flower