From Columbia (“the United States”).
columbiad (plural columbiads)
- (military, historical) A form of seacoast cannon; a long, chambered gun designed for launching shot or shells with heavy charges of powder, at high angles of elevation.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for columbiad in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)