underplate

/AH1 N D ER0 P L EY1 T/
noun
  1. 1

    (kitchenware) A charger plate

  2. 2

    An armoured plate that forms part of a mortice lock.

  3. 3

    (geology) A tectonic plate that forms or moves under another.

verb
  1. 1

    (geology) To act as an underplate.