The Collaborative International Dictionary
Lampas \Lam"pas\, n. [F. lampas.] An inflammation and swelling of the soft parts of the roof of the mouth immediately behind the fore teeth in the horse; -- called also lampers.
Wiktionary
Etymology 1 n. A type of luxury fabric with a background weft. Etymology 2
alt. An inflammation and swelling of the soft parts of the palate immediately behind the foretooth in a horse. n. An inflammation and swelling of the soft parts of the palate immediately behind the foretooth in a horse.
Wikipedia
Lampas is a type of luxury fabric with a background weft (a "ground weave") typically in taffeta with supplementary wefts (the "pattern wefts") laid on top and forming a design, sometimes also with a " brocading weft". Lampas is typically woven in silk, and often has gold and silver thread enrichment.