Statement of sexual status in poetic measures (5)

I believe the answer is:

iambi

I'm a little stuck... Click here to teach me more about this clue!

'poetic measures' is the definition.
(I've seen this in another clue)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for iambi that I've seen before include "Poetic pieces" , "Film theatre" , "Poetic feet" , "Metrical units with alternating long and short syllables" , "Concierto de Aranjuez composer" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app