Artificial intelligent assistant

over-garment

ˈover-ˌgarment
  [over- 8 c.]
  A garment worn over the others, an outer garment.

1470–85 Malory Arthur ix. i, His ouer garment sat ouer⁓thwartly. 1882–3 Schaff Encycl. Relig. Knowl. I. 500 The over-garment..which was thrown around the person. 1884 Browning Ferishtah, Two Camels 17 Thou hast already donned Thy sheepskin over-garment.

Oxford English Dictionary

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