co·​horn | \ˈkōˌhȯrn\
variants: or less commonly coehorn \ ˈkōōˌ-​, ˈkōˌ-​ \
plural -s

Definition of cohorn 

: a small bronze mortar that was mounted on a wooden block with handles and used for throwing light shells

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History and Etymology for cohorn

from earlier Coehorn mortar, partial translation of Dutch Coe-hoorn-mortier, after Baron Menno van Coehoorn †1704 Dutch engineer, its inventor

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