What does the word ensign mean?

Usage examples for ensign

  1. " I'm sure it's not my wish to be bad friends," said Ensign Long. – Middy and Ensign by G. Manville Fenn
  2. " Mr. Brooks, the jailer, is here- Ensign Martin and Brincle, of the Georgia guard," was the reply of the jailer. – Guy Rivers: A Tale of Georgia by William Gilmore Simms