The Collaborative International Dictionary
lavallier
lavaliere \la`va`liere"\, lavallier \la`val`lier"\, or La
valliere \La val`liere"\, n. [after the Duchesse de La Valliere,
a mistress of Louis XI.
--RHUD.]
A neck ornament consisting of a chain and single jewelled
pendant, or drop; also, the pendant itself.