Conclave

https://commons.wikimedia.org/wiki/File:Weltchronik_Fulda_Aa88_226r_detail.jpg

The King sent for his wise men all
To find a rhyme for W;
When they had thought a good long time
But could not think of a single rhyme,
“I’m sorry,” said he, “to trouble you.”

— James Reeves

(Thanks, Dave.)