señorita

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Used as a courtesy title before the surname or full name of a girl or unmarried woman in a Spanish-speaking area.
2. n. Used as a form of address for a girl or young woman in a Spanish-speaking area.
3. n. A Spanish or Spanish-speaking unmarried woman or girl.

Century Dictionary and Cyclopedia

1. n. A young lady; in address, miss; as a title, Miss: in Spanish use.
2. n. In ichthyology, a graceful little labroid fish of California, Pseudojulis or Oxyjulis modestus. It is 6 or 7 inches long, prettily marked with indigo-blue, orange, and black upon an olive-brown ground, cream-colored below.
3. n. A Californian fish, Halichæres semicinctus.

Wiktionary

1. n. A young woman in or from a Hispanophone community.

GNU Webster's 1913

1. n. A Spanish title of courtesy given to a young lady; Miss; also, a young lady.

WordNet 3.0

1. n. a Spanish title or form of address used to or of an unmarried girl or woman; similar to the English `Miss'