/jing"goh/ , n. , pl. jingoes , adj.
n.
1. a person who professes his or her patriotism loudly and excessively, favoring vigilant preparedness for war and an aggressive foreign policy; bellicose chauvinist.
2. Eng. Hist. a Conservative supporter of Disraeli's policy in the Near East during the period 1877-78.
3. by jingo! Informal. (an exclamation used to emphasize the truth or importance of a foregoing statement, or to express astonishment, approval, etc.): I know you can do it, by jingo!
adj.
4. of jingoes.
5. characterized by jingoism.
[ 1660-70; orig. conjurer's call hey jingo appear! come forth! (opposed to hey presto hasten away!), taken into general use in the phrase by Jingo, euphemism for by God; chauvinistic sense from by Jingo in political song supporting use of British forces against Russia in 1878 ]