Martello noun.
[mɑ:'tɛlǝʊ] Pl.
-os.
E19.[Alt. (by assoc. with Italian martello hammer) of Cape Mortella in Corsica, where such a tower proved difficult for the English to capture in 1794.]In full
Martello tower. A small circular fort with very thick walls,
esp. any of those erected in Britain as a coastal defence during the Napoleonic Wars.
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