—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. 1. of jingoes.
2. characterized by jingoism.