An example of a fort is a protected building where arms are stored and where guards are posted.
- To make a defensive stand.
- To keep things in operation; remain on duty, etc.
Idioms and Phrasal Verbs
Origin of fort
- Middle English strength, stronghold from Old French strong, strength from Latin fortis bhergh-2 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle French fort (adjective use is of Old French).