Coehorn

Coe'horn noun [ From its inventor, Baron Coehorn .] (Mil.) A small bronze mortar mounted on a wooden block with handles, and light enough to be carried short distances by two men.
Found on http://www.encyclo.co.uk/webster/C/103

Coehorn

• (n.) A small bronze mortar mounted on a wooden block with handles, and light enough to be carried short distances by two men.
Found on http://thinkexist.com/dictionary/meaning/coehorn/

Coehorn

A coehorn was a small howitzer of about 4.5 inches calibre. They were named after Baron von Coehorn of Holland.
Found on http://www.probertencyclopaedia.com/browse/FYC.HTM

coehorn

small mortar for throwing grenades
Found on http://phrontistery.info/c.html
No exact match found