Definify.com
Webster 1913 Edition
Columbiad
Co-lum′bi-ad
,Noun.
[From
Columbia
the United States.] (Mil.)
A form of seacoast cannon; a long, chambered gun designed for throwing shot or shells with heavy charges of powder, at high angles of elevation.
☞ Since the War of 1812 the
Columbiad
has been much modified, especially by General Rodman
, and the improved form now used in seacoast defense is often called the Rodman gun
.