Actor
noun, の adjective
A superior haiku requires someone really famous and well known to read it... it's just on that level. Who is super well known and who deserves to read this superior haiku? A great actor, perhaps?
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
私の恋人は、この芝居で馬の役を演じている俳優よ。
My boyfriend is the actor performing the part of the horse.