'Chatelaine' definitions:

Definition of 'chatelaine'

From: WordNet
noun
The mistress of a chateau or large country house
noun
A chain formerly worn at the waist by women; for carrying a purse or bunch of keys etc.

Definition of 'Chatelaine'

From: GCIDE
  • Chatelaine \Chat"e*laine\, n. [F. ch[^a]telaine the wife of a castellan, the mistress of a chateau, a chatelaine chain.] 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. [1913 Webster]