'Dona' definitions:

Definition of 'Dona'

(from WordNet)
noun
A Spanish courtesy title or form of address for a woman; "Dona Marguerita"

Definition of 'Dona'

From: GCIDE
  • Dona \Do"[~n]a\, n. [Sp. do[~n]a. See Duenna.]
  • 1. Lady; mistress; madam; -- a title of respect used in Spain, prefixed to the Christian name of a lady. [1913 Webster]
  • 2. A lady or gentlewoman; -- used in Spanish-speaking countries. [PJC]