This is the 5223rd most frequent Russian word.
обжаловать
To appeal or challenge (a decision or ruling).
The word 'обжаловать' is used here in the sense of appealing or contesting a legal decision.
Адвокат решил обжаловать решение суда.
The lawyer decided to appeal the court's decision.
'Обжаловать' refers to the formal action of disputing or challenging administrative or governmental actions.
Гражданин имеет право обжаловать действия государственных органов.
A citizen has the right to contest the actions of government authorities.
Here, 'обжаловать' describes the act of formally opposing an incorrect penalty or charge.