n [U] (fml 文) ~ (to sb/sth) support of or loyalty to a government, ruler, cause, etc （对政府, 统治者, 事业等的）拥护, 忠诚
*swear (an oath of) allegiance to the Queen 宣誓效忠女王.
n [U and C]
[Date: 1300-1400; Language: Old French;Origin: ligeance, from lige 'person you owe loyal service to', from Late Latin laetus 'serf']
loyalty to a leader, country, belief etc
You owe allegiance (=have a duty to give allegiance) to your king.
I pledge allegiance to the flag of the United States of America.
an oath of allegiance
(=start to support a different person, group etc)
The people here have strong political allegiances .
1. He abjured his allegiance to the king. 他发誓不再效忠皇帝。