Acton

·noun A stuffed jacket worn under the mail, or (later) a jacket plated with mail.

acton
See acto ...

The Sailor's Word-Book
Acton, John Emerich Edward Dalberg-Acton, 1st Lord
(1834-1902) Historian, s. of Sir Richard A., and grandson of Sir John A., who was Prime Minister of...

Short Biographical Dictionary of English Literature by John W. Cousin