from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small bas-relief metal tablet used as a decoration for book covers in the 15th-17th centuries.
- n. The smallest closed loop, enclosing the region between four lattice sites, in lattice gauge theory.
from the GNU version of the Collaborative International Dictionary of English
- n. A small plaque, esp., in modern medal engraving, a small and delicate bas-relief, whether cast or struck from a die, or of form other than circular.
from The Century Dictionary and Cyclopedia
- n. A small plaque or flat decorative object, as a tile of porcelain or a plate of metal, made for application to a piece of furniture as part of its ornamentation: as, a bureau decorated with bronze plaquettes.
- n. Same as plaque, 5.
From the French plaquette ("small plaque"), allegedly coined in the 1860s. (Wiktionary)