Examples from the Web for corer
With a corer extract the core from the whole, unpared apple, which is less likely to break than one which has been peeled.Paper-bag Cookery|Vera Serkoff
Then, suggested Frank, you wont mind if I experiment with the corer?
If the fruit was hard and crisp, according to the letters of complaint the corer split the apple.
Then she took the bowl and the corer over to where Grandmother was working with her strawberries.Mary Jane--Her Visit|Clara Ingram Judson
The corer that I have here is nothing but a round tin cylinder.