[ eest-mohst or, esp. British, -muh st ]
/ ˈistˌmoʊst or, esp. British, -məst /
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for eastmost
Close by was Cabo de Pera, the eastmost point of the island.The Fortunate Isles|Mary Stuart Boyd
But the most interesting of all, indeed a famous window, is the eastmost in the north aisle.Stained Glass Tours in England|Charles Hitchcock Sherrill
The road for ships is between the before-mentioned rock and the eastmost island.