Artificial intelligent assistant

crenelet

crenelet rare.
  (ˈkrɛnɪlɪt)
  [f. crenel n. + -et1.]
  A small crenel or embrasure.

1860 Reade Cloister & H. xliii. II. 278 With far more freedom..than they could shoot..through the sloping crenelets of the higher towers.

Oxford English Dictionary

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