Irish Antiq. [= Irish caiseal bulwark, wall, prob. ad. L. castell-um fortlet.] (See quot.)

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1845.  Petrie, Eccl. Archit. Irel., 421. All separate edifices, surrounded by a cashel, or circular wall.

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1885.  G. T. Stokes, in Contemp. Rev., May, 742. In Ireland alone does he find in the West, cashels such as he finds in Egypt. A cashel is a strong fence or ring wall enclosing a group of churches, with their annexed monastic buildings [e.g., at Glendalough].

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