Artificial intelligent assistant

port-canon

port-ˈcanon, -ˈcannon Obs.
  [f. port n.4 (?) + canon, canion.]
  An ornamental roll around the legs of breeches: = canion.

1663 Butler Hud. i. iii. 926 The French..Now give us Laws for Pantaloons..Port-cannons, Perriwigs, and Feathers. 1677 [see canion]. a 1680 Butler Rem. (1759) II. 83 He walks in his Portcannons like one that stalks in long Grass.

Oxford English Dictionary

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