duenna

n. (Spanish) elderly female chaperon; governess

For the biological meaning, see chaperone. For the historical hood or cap, see Chaperon (headgear).'' A chaperon (or, more frequently, chaperone) is an adult who accompanies or supervises one or more young, unmarried men or women during social occasions, usually with the specific intent of preventing inappropriate social or sexual interactions or illegal behavior (e.g., underage drinking or illegal drug use). The chaperon is typically accountable to a third party, usually the parents of one of the accompanied young people.
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Noun
1. a woman chaperon
(hypernym) chaperon, chaperone
(classification) Spain, Kingdom of Spain, Espana

(n.)
The chief lady in waiting on the queen of Spain.
  

(n.)
Any old woman who is employed to guard a younger one; a governess.
  

(n.)
An elderly lady holding a station between a governess and companion, and appointed to have charge over the younger ladies in a Spanish or a Portuguese family.
  

n.
استاني