a warship (originally the Union steamer Merrimack) that the Confederates converted into an ironclad, renamed the Virginia, and used against the Monitor in 1862 in the first battle between ironclads.
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How to use Merrimac in a sentence
The "Merrimac" ran into Wilmington and delivered her valuable cargo in fine order.The Supplies for the Confederate Army | Caleb Huse
In a minute the good ship began to sink, while the Merrimac poured shot and shell into her wounded ribs.
The sun rose on the morning of Sunday, March 9, and an hour later the Merrimac was again under way to finish her work.
That was a very bad business, for there was enough left of the old Merrimac to make a great deal of trouble for the United States.
But there was alarm enough, for their captains knew that the Merrimac was finished and might come at any hour.