plaque Meaning, Definition & Usage

  1. noun (pathology) a small abnormal patch on or inside the body
  2. noun a memorial made of brass
    brass; memorial tablet.

WordNet

Plaque noun
Etymology
F. Cf. Plack, and see Placard.
Definitions
  1. Any flat, thin piece of metal, clay, ivory, or the like, used for ornament, or for painting pictures upon, as a slab, plate, dish, or the like, hung upon a wall; also, a smaller decoration worn on the person, as a brooch.

Webster 1913