CHATELAINE
chatelaine
(noun) a chain formerly worn at the waist by women; for carrying a purse or bunch of keys etc.
chatelaine
(noun) the mistress of a chateau or large country house
Source: WordNet® 3.1
Etymology
Noun
chatelaine (plural chatelaines)
(dated) The mistress of a castle or large household. [from mid 19th c.]
(historical) A chain or clasp worn at the waist by women with handkerchief, keys, etc, attached, supposed to resemble the chain of keys once worn by medieval chatelaines.
A similar thing in miniature attached to a watchchain.
Usage notes
Not to be confused with chatelain (“castle-keeper, castellan”).
Notes
Source: Wiktionary
Chat"e*laine, n. Etym: [F. châtelaine the wife of a castellan, the
mistress of a chateau, a chatelaine chain.]
Definition: An ornamental hook, or brooch worn by a lady at her waist, and
having a short chain or chains attached for a watch, keys, trinkets,
etc. Also used adjectively; as, a chatelaine chain.
Source: Webster’s Unabridged Dictionary 1913 Edition