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Webster 1913 Edition
Jacobus
Ja-co′bus
,Noun.
pl. 
Jacobuses 
(#)
. [See 
Jacobite
.] An English gold coin, of the value of twenty-five shillings sterling, struck in the reign of 
James I.
 Webster 1828 Edition
Jacobus
JAC'OBUS
,Noun.