It looks vaguely familiar.
I think I’ve seen one of these before somewhere.
I’ve pretty darned certain I read about them in a book once at school.
Might start with ‘H’.
It’s on the tip of my tongue…
If I stand in the middle of it, and you others all hold down the fencing in case it gets breezy again, I’m sure the word will come to me.
I’m remembering a sort of ‘O’ sound…
Nah, let’s get some tea instead.