Eyot
You say it like the number eight. It’s a small island, especially in the River Thames.
It’s from Old English iggath (or igeth), which is based on ieg, an island,
It turns up in J R R Tolkien’s Lord of the Rings:
“That night they camped on a small eyot close to the western bank”.
An older form that’s more obviously connected to the way that you say it is ait, a spelling retained in the names of some of the Thames islands.
