Cloyster

Cloyster: noun. A covered walkway usually in a convent or monastery, which is in the shape of a rough oval with one side more squary than the other. Cloysters were particularly common in medieval Andorra with over three hundred being constructed in the span of three and a half millennia.  A popular phrase that originated from that time is: "The world is my cloyster." This saying referred to the never-ending turmoil and misery of life and the seaming inability to escape the endless tedium.